68947580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{821}}^1$

素因数の和:879

約数の個数: 96

約数和(自身を含む): 174000960

約数和(自身を除く): 105053380

約数列:

[1, 2, 4, 5, 10, 13, 17, 19, 20, 26, 34, 38, 52, 65, 68, 76, 85, 95, 130, 170, 190, 221, 247, 260, 323, 340, 380, 442, 494, 646, 821, 884, 988, 1105, 1235, 1292, 1615, 1642, 2210, 2470, 3230, 3284, 4105, 4199, 4420, 4940, 6460, 8210, 8398, 10673, 13957, 15599, 16420, 16796, 20995, 21346, 27914, 31198, 41990, 42692, 53365, 55828, 62396, 69785, 77995, 83980, 106730, 139570, 155990, 181441, 202787, 213460, 265183, 279140, 311980, 362882, 405574, 530366, 725764, 811148, 907205, 1013935, 1060732, 1325915, 1814410, 2027870, 2651830, 3447379, 3628820, 4055740, 5303660, 6894758, 13789516, 17236895, 34473790, 68947580]

約数ペア:

[(1, 68947580), (2, 34473790), (4, 17236895), (5, 13789516), (10, 6894758), (13, 5303660), (17, 4055740), (19, 3628820), (20, 3447379), (26, 2651830), (34, 2027870), (38, 1814410), (52, 1325915), (65, 1060732), (68, 1013935), (76, 907205), (85, 811148), (95, 725764), (130, 530366), (170, 405574), (190, 362882), (221, 311980), (247, 279140), (260, 265183), (323, 213460), (340, 202787), (380, 181441), (442, 155990), (494, 139570), (646, 106730), (821, 83980), (884, 77995), (988, 69785), (1105, 62396), (1235, 55828), (1292, 53365), (1615, 42692), (1642, 41990), (2210, 31198), (2470, 27914), (3230, 21346), (3284, 20995), (4105, 16796), (4199, 16420), (4420, 15599), (4940, 13957), (6460, 10673), (8210, 8398)]