623970440

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{379}}^1\times {\mathrm{521}}^1$

素因数の和:990

約数の個数: 64

約数和(自身を含む): 1428192000

約数和(自身を除く): 804221560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 379, 395, 521, 632, 758, 790, 1042, 1516, 1580, 1895, 2084, 2605, 3032, 3160, 3790, 4168, 5210, 7580, 10420, 15160, 20840, 29941, 41159, 59882, 82318, 119764, 149705, 164636, 197459, 205795, 239528, 299410, 329272, 394918, 411590, 598820, 789836, 823180, 987295, 1197640, 1579672, 1646360, 1974590, 3949180, 7898360, 15599261, 31198522, 62397044, 77996305, 124794088, 155992610, 311985220, 623970440]

約数ペア:

[(1, 623970440), (2, 311985220), (4, 155992610), (5, 124794088), (8, 77996305), (10, 62397044), (20, 31198522), (40, 15599261), (79, 7898360), (158, 3949180), (316, 1974590), (379, 1646360), (395, 1579672), (521, 1197640), (632, 987295), (758, 823180), (790, 789836), (1042, 598820), (1516, 411590), (1580, 394918), (1895, 329272), (2084, 299410), (2605, 239528), (3032, 205795), (3160, 197459), (3790, 164636), (4168, 149705), (5210, 119764), (7580, 82318), (10420, 59882), (15160, 41159), (20840, 29941)]