31878550

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{389}}^1$

素因数の和:561

約数の個数: 48

約数和(自身を含む): 65286000

約数和(自身を除く): 33407450

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 149, 275, 298, 389, 550, 745, 778, 1490, 1639, 1945, 3278, 3725, 3890, 4279, 7450, 8195, 8558, 9725, 16390, 19450, 21395, 40975, 42790, 57961, 81950, 106975, 115922, 213950, 289805, 579610, 637571, 1275142, 1449025, 2898050, 3187855, 6375710, 15939275, 31878550]

約数ペア:

[(1, 31878550), (2, 15939275), (5, 6375710), (10, 3187855), (11, 2898050), (22, 1449025), (25, 1275142), (50, 637571), (55, 579610), (110, 289805), (149, 213950), (275, 115922), (298, 106975), (389, 81950), (550, 57961), (745, 42790), (778, 40975), (1490, 21395), (1639, 19450), (1945, 16390), (3278, 9725), (3725, 8558), (3890, 8195), (4279, 7450)]