281890960

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:225

約数の個数: 160

約数和(自身を含む): 739952640

約数和(自身を除く): 458061680

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 47, 52, 65, 73, 79, 80, 94, 104, 130, 146, 158, 188, 208, 235, 260, 292, 316, 365, 376, 395, 470, 520, 584, 611, 632, 730, 752, 790, 940, 949, 1027, 1040, 1168, 1222, 1264, 1460, 1580, 1880, 1898, 2054, 2444, 2920, 3055, 3160, 3431, 3713, 3760, 3796, 4108, 4745, 4888, 5135, 5767, 5840, 6110, 6320, 6862, 7426, 7592, 8216, 9490, 9776, 10270, 11534, 12220, 13724, 14852, 15184, 16432, 17155, 18565, 18980, 20540, 23068, 24440, 27448, 28835, 29704, 34310, 37130, 37960, 41080, 44603, 46136, 48269, 48880, 54896, 57670, 59408, 68620, 74260, 74971, 75920, 82160, 89206, 92272, 96538, 115340, 137240, 148520, 149942, 178412, 193076, 223015, 230680, 241345, 271049, 274480, 297040, 299884, 356824, 374855, 386152, 446030, 461360, 482690, 542098, 599768, 713648, 749710, 772304, 892060, 965380, 1084196, 1199536, 1355245, 1499420, 1784120, 1930760, 2168392, 2710490, 2998840, 3523637, 3568240, 3861520, 4336784, 5420980, 5997680, 7047274, 10841960, 14094548, 17618185, 21683920, 28189096, 35236370, 56378192, 70472740, 140945480, 281890960]

約数ペア:

[(1, 281890960), (2, 140945480), (4, 70472740), (5, 56378192), (8, 35236370), (10, 28189096), (13, 21683920), (16, 17618185), (20, 14094548), (26, 10841960), (40, 7047274), (47, 5997680), (52, 5420980), (65, 4336784), (73, 3861520), (79, 3568240), (80, 3523637), (94, 2998840), (104, 2710490), (130, 2168392), (146, 1930760), (158, 1784120), (188, 1499420), (208, 1355245), (235, 1199536), (260, 1084196), (292, 965380), (316, 892060), (365, 772304), (376, 749710), (395, 713648), (470, 599768), (520, 542098), (584, 482690), (611, 461360), (632, 446030), (730, 386152), (752, 374855), (790, 356824), (940, 299884), (949, 297040), (1027, 274480), (1040, 271049), (1168, 241345), (1222, 230680), (1264, 223015), (1460, 193076), (1580, 178412), (1880, 149942), (1898, 148520), (2054, 137240), (2444, 115340), (2920, 96538), (3055, 92272), (3160, 89206), (3431, 82160), (3713, 75920), (3760, 74971), (3796, 74260), (4108, 68620), (4745, 59408), (4888, 57670), (5135, 54896), (5767, 48880), (5840, 48269), (6110, 46136), (6320, 44603), (6862, 41080), (7426, 37960), (7592, 37130), (8216, 34310), (9490, 29704), (9776, 28835), (10270, 27448), (11534, 24440), (12220, 23068), (13724, 20540), (14852, 18980), (15184, 18565), (16432, 17155)]