640294460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{4673}}^1$

素因数の和:4743

約数の個数: 96

約数和(自身を含む): 1583027712

約数和(自身を除く): 942733252

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 31, 34, 52, 62, 65, 68, 85, 124, 130, 155, 170, 221, 260, 310, 340, 403, 442, 527, 620, 806, 884, 1054, 1105, 1612, 2015, 2108, 2210, 2635, 4030, 4420, 4673, 5270, 6851, 8060, 9346, 10540, 13702, 18692, 23365, 27404, 34255, 46730, 60749, 68510, 79441, 93460, 121498, 137020, 144863, 158882, 242996, 289726, 303745, 317764, 397205, 579452, 607490, 724315, 794410, 1032733, 1214980, 1448630, 1588820, 1883219, 2065466, 2462671, 2897260, 3766438, 4130932, 4925342, 5163665, 7532876, 9416095, 9850684, 10327330, 12313355, 18832190, 20654660, 24626710, 32014723, 37664380, 49253420, 64029446, 128058892, 160073615, 320147230, 640294460]

約数ペア:

[(1, 640294460), (2, 320147230), (4, 160073615), (5, 128058892), (10, 64029446), (13, 49253420), (17, 37664380), (20, 32014723), (26, 24626710), (31, 20654660), (34, 18832190), (52, 12313355), (62, 10327330), (65, 9850684), (68, 9416095), (85, 7532876), (124, 5163665), (130, 4925342), (155, 4130932), (170, 3766438), (221, 2897260), (260, 2462671), (310, 2065466), (340, 1883219), (403, 1588820), (442, 1448630), (527, 1214980), (620, 1032733), (806, 794410), (884, 724315), (1054, 607490), (1105, 579452), (1612, 397205), (2015, 317764), (2108, 303745), (2210, 289726), (2635, 242996), (4030, 158882), (4420, 144863), (4673, 137020), (5270, 121498), (6851, 93460), (8060, 79441), (9346, 68510), (10540, 60749), (13702, 46730), (18692, 34255), (23365, 27404)]