181728820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3221}}^1$

素因数の和:3281

約数の個数: 96

約数和(自身を含む): 485001216

約数和(自身を除く): 303272396

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 31, 35, 52, 62, 65, 70, 91, 124, 130, 140, 155, 182, 217, 260, 310, 364, 403, 434, 455, 620, 806, 868, 910, 1085, 1612, 1820, 2015, 2170, 2821, 3221, 4030, 4340, 5642, 6442, 8060, 11284, 12884, 14105, 16105, 22547, 28210, 32210, 41873, 45094, 56420, 64420, 83746, 90188, 99851, 112735, 167492, 199702, 209365, 225470, 293111, 399404, 418730, 450940, 499255, 586222, 698957, 837460, 998510, 1172444, 1298063, 1397914, 1465555, 1997020, 2596126, 2795828, 2931110, 3494785, 5192252, 5862220, 6490315, 6989570, 9086441, 12980630, 13979140, 18172882, 25961260, 36345764, 45432205, 90864410, 181728820]

約数ペア:

[(1, 181728820), (2, 90864410), (4, 45432205), (5, 36345764), (7, 25961260), (10, 18172882), (13, 13979140), (14, 12980630), (20, 9086441), (26, 6989570), (28, 6490315), (31, 5862220), (35, 5192252), (52, 3494785), (62, 2931110), (65, 2795828), (70, 2596126), (91, 1997020), (124, 1465555), (130, 1397914), (140, 1298063), (155, 1172444), (182, 998510), (217, 837460), (260, 698957), (310, 586222), (364, 499255), (403, 450940), (434, 418730), (455, 399404), (620, 293111), (806, 225470), (868, 209365), (910, 199702), (1085, 167492), (1612, 112735), (1820, 99851), (2015, 90188), (2170, 83746), (2821, 64420), (3221, 56420), (4030, 45094), (4340, 41873), (5642, 32210), (6442, 28210), (8060, 22547), (11284, 16105), (12884, 14105)]