128137725

素因数分解:

$3^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{18371}}^1$

素因数の和:18418

約数の個数: 36

約数和(自身を含む): 236925312

約数和(自身を除く): 108787587

約数列:

[1, 3, 5, 9, 15, 25, 31, 45, 75, 93, 155, 225, 279, 465, 775, 1395, 2325, 6975, 18371, 55113, 91855, 165339, 275565, 459275, 569501, 826695, 1377825, 1708503, 2847505, 4133475, 5125509, 8542515, 14237525, 25627545, 42712575, 128137725]

約数ペア:

[(1, 128137725), (3, 42712575), (5, 25627545), (9, 14237525), (15, 8542515), (25, 5125509), (31, 4133475), (45, 2847505), (75, 1708503), (93, 1377825), (155, 826695), (225, 569501), (279, 459275), (465, 275565), (775, 165339), (1395, 91855), (2325, 55113), (6975, 18371)]