20921881760

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{227}}^1\times {\mathrm{607}}^1$

素因数の和:935

約数の個数: 192

約数和(自身を含む): 54286267392

約数和(自身を除く): 33364385632

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 73, 80, 104, 130, 146, 160, 208, 227, 260, 292, 365, 416, 454, 520, 584, 607, 730, 908, 949, 1040, 1135, 1168, 1214, 1460, 1816, 1898, 2080, 2270, 2336, 2428, 2920, 2951, 3035, 3632, 3796, 4540, 4745, 4856, 5840, 5902, 6070, 7264, 7592, 7891, 9080, 9490, 9712, 11680, 11804, 12140, 14755, 15184, 15782, 16571, 18160, 18980, 19424, 23608, 24280, 29510, 30368, 31564, 33142, 36320, 37960, 39455, 44311, 47216, 48560, 59020, 63128, 66284, 75920, 78910, 82855, 88622, 94432, 97120, 118040, 126256, 132568, 137789, 151840, 157820, 165710, 177244, 215423, 221555, 236080, 252512, 265136, 275578, 315640, 331420, 354488, 430846, 443110, 472160, 530272, 551156, 576043, 631280, 662840, 688945, 708976, 861692, 886220, 1077115, 1102312, 1152086, 1262560, 1325680, 1377890, 1417952, 1723384, 1772440, 1791257, 2154230, 2204624, 2304172, 2651360, 2755780, 2880215, 3446768, 3544880, 3582514, 4308460, 4409248, 4608344, 5511560, 5760430, 6893536, 7089760, 7165028, 8616920, 8956285, 9216688, 10058597, 11023120, 11520860, 14330056, 17233840, 17912570, 18433376, 20117194, 22046240, 23041720, 28660112, 34467680, 35825140, 40234388, 46083440, 50292985, 57320224, 71650280, 80468776, 92166880, 100585970, 130761761, 143300560, 160937552, 201171940, 261523522, 286601120, 321875104, 402343880, 523047044, 653808805, 804687760, 1046094088, 1307617610, 1609375520, 2092188176, 2615235220, 4184376352, 5230470440, 10460940880, 20921881760]

約数ペア:

[(1, 20921881760), (2, 10460940880), (4, 5230470440), (5, 4184376352), (8, 2615235220), (10, 2092188176), (13, 1609375520), (16, 1307617610), (20, 1046094088), (26, 804687760), (32, 653808805), (40, 523047044), (52, 402343880), (65, 321875104), (73, 286601120), (80, 261523522), (104, 201171940), (130, 160937552), (146, 143300560), (160, 130761761), (208, 100585970), (227, 92166880), (260, 80468776), (292, 71650280), (365, 57320224), (416, 50292985), (454, 46083440), (520, 40234388), (584, 35825140), (607, 34467680), (730, 28660112), (908, 23041720), (949, 22046240), (1040, 20117194), (1135, 18433376), (1168, 17912570), (1214, 17233840), (1460, 14330056), (1816, 11520860), (1898, 11023120), (2080, 10058597), (2270, 9216688), (2336, 8956285), (2428, 8616920), (2920, 7165028), (2951, 7089760), (3035, 6893536), (3632, 5760430), (3796, 5511560), (4540, 4608344), (4745, 4409248), (4856, 4308460), (5840, 3582514), (5902, 3544880), (6070, 3446768), (7264, 2880215), (7592, 2755780), (7891, 2651360), (9080, 2304172), (9490, 2204624), (9712, 2154230), (11680, 1791257), (11804, 1772440), (12140, 1723384), (14755, 1417952), (15184, 1377890), (15782, 1325680), (16571, 1262560), (18160, 1152086), (18980, 1102312), (19424, 1077115), (23608, 886220), (24280, 861692), (29510, 708976), (30368, 688945), (31564, 662840), (33142, 631280), (36320, 576043), (37960, 551156), (39455, 530272), (44311, 472160), (47216, 443110), (48560, 430846), (59020, 354488), (63128, 331420), (66284, 315640), (75920, 275578), (78910, 265136), (82855, 252512), (88622, 236080), (94432, 221555), (97120, 215423), (118040, 177244), (126256, 165710), (132568, 157820), (137789, 151840)]