21146582080

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{167}}^1\times {\mathrm{499}}^1$

素因数の和:757

約数の個数: 224

約数和(自身を含む): 55558944000

約数和(自身を除く): 34412361920

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 61, 64, 65, 80, 104, 122, 130, 160, 167, 208, 244, 260, 305, 320, 334, 416, 488, 499, 520, 610, 668, 793, 832, 835, 976, 998, 1040, 1220, 1336, 1586, 1670, 1952, 1996, 2080, 2171, 2440, 2495, 2672, 3172, 3340, 3904, 3965, 3992, 4160, 4342, 4880, 4990, 5344, 6344, 6487, 6680, 7930, 7984, 8684, 9760, 9980, 10187, 10688, 10855, 12688, 12974, 13360, 15860, 15968, 17368, 19520, 19960, 20374, 21710, 25376, 25948, 26720, 30439, 31720, 31936, 32435, 34736, 39920, 40748, 43420, 50752, 50935, 51896, 53440, 60878, 63440, 64870, 69472, 79840, 81496, 83333, 86840, 101870, 103792, 121756, 126880, 129740, 132431, 138944, 152195, 159680, 162992, 166666, 173680, 203740, 207584, 243512, 253760, 259480, 264862, 304390, 325984, 333332, 347360, 395707, 407480, 415168, 416665, 487024, 518960, 529724, 608780, 651968, 662155, 666664, 694720, 791414, 814960, 833330, 974048, 1037920, 1059448, 1083329, 1217560, 1324310, 1333328, 1582828, 1629920, 1666660, 1948096, 1978535, 2075840, 2118896, 2166658, 2435120, 2648620, 2666656, 3165656, 3259840, 3333320, 3957070, 4237792, 4333316, 4870240, 5083313, 5297240, 5333312, 5416645, 6331312, 6666640, 7914140, 8475584, 8666632, 9740480, 10166626, 10594480, 10833290, 12662624, 13333280, 15828280, 17333264, 20333252, 21188960, 21666580, 25325248, 25416565, 26666560, 31656560, 34666528, 40666504, 42377920, 43333160, 50833130, 63313120, 66083069, 69333056, 81333008, 86666320, 101666260, 126626240, 132166138, 162666016, 173332640, 203332520, 264332276, 325332032, 330415345, 346665280, 406665040, 528664552, 660830690, 813330080, 1057329104, 1321661380, 1626660160, 2114658208, 2643322760, 4229316416, 5286645520, 10573291040, 21146582080]

約数ペア:

[(1, 21146582080), (2, 10573291040), (4, 5286645520), (5, 4229316416), (8, 2643322760), (10, 2114658208), (13, 1626660160), (16, 1321661380), (20, 1057329104), (26, 813330080), (32, 660830690), (40, 528664552), (52, 406665040), (61, 346665280), (64, 330415345), (65, 325332032), (80, 264332276), (104, 203332520), (122, 173332640), (130, 162666016), (160, 132166138), (167, 126626240), (208, 101666260), (244, 86666320), (260, 81333008), (305, 69333056), (320, 66083069), (334, 63313120), (416, 50833130), (488, 43333160), (499, 42377920), (520, 40666504), (610, 34666528), (668, 31656560), (793, 26666560), (832, 25416565), (835, 25325248), (976, 21666580), (998, 21188960), (1040, 20333252), (1220, 17333264), (1336, 15828280), (1586, 13333280), (1670, 12662624), (1952, 10833290), (1996, 10594480), (2080, 10166626), (2171, 9740480), (2440, 8666632), (2495, 8475584), (2672, 7914140), (3172, 6666640), (3340, 6331312), (3904, 5416645), (3965, 5333312), (3992, 5297240), (4160, 5083313), (4342, 4870240), (4880, 4333316), (4990, 4237792), (5344, 3957070), (6344, 3333320), (6487, 3259840), (6680, 3165656), (7930, 2666656), (7984, 2648620), (8684, 2435120), (9760, 2166658), (9980, 2118896), (10187, 2075840), (10688, 1978535), (10855, 1948096), (12688, 1666660), (12974, 1629920), (13360, 1582828), (15860, 1333328), (15968, 1324310), (17368, 1217560), (19520, 1083329), (19960, 1059448), (20374, 1037920), (21710, 974048), (25376, 833330), (25948, 814960), (26720, 791414), (30439, 694720), (31720, 666664), (31936, 662155), (32435, 651968), (34736, 608780), (39920, 529724), (40748, 518960), (43420, 487024), (50752, 416665), (50935, 415168), (51896, 407480), (53440, 395707), (60878, 347360), (63440, 333332), (64870, 325984), (69472, 304390), (79840, 264862), (81496, 259480), (83333, 253760), (86840, 243512), (101870, 207584), (103792, 203740), (121756, 173680), (126880, 166666), (129740, 162992), (132431, 159680), (138944, 152195)]