28781325

素因数分解:

$3^4\times 5^2\times {\mathrm{61}}^1\times {\mathrm{233}}^1$

素因数の和:316

約数の個数: 60

約数和(自身を含む): 54419508

約数和(自身を除く): 25638183

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 61, 75, 81, 135, 183, 225, 233, 305, 405, 549, 675, 699, 915, 1165, 1525, 1647, 2025, 2097, 2745, 3495, 4575, 4941, 5825, 6291, 8235, 10485, 13725, 14213, 17475, 18873, 24705, 31455, 41175, 42639, 52425, 71065, 94365, 123525, 127917, 157275, 213195, 355325, 383751, 471825, 639585, 1065975, 1151253, 1918755, 3197925, 5756265, 9593775, 28781325]

約数ペア:

[(1, 28781325), (3, 9593775), (5, 5756265), (9, 3197925), (15, 1918755), (25, 1151253), (27, 1065975), (45, 639585), (61, 471825), (75, 383751), (81, 355325), (135, 213195), (183, 157275), (225, 127917), (233, 123525), (305, 94365), (405, 71065), (549, 52425), (675, 42639), (699, 41175), (915, 31455), (1165, 24705), (1525, 18873), (1647, 17475), (2025, 14213), (2097, 13725), (2745, 10485), (3495, 8235), (4575, 6291), (4941, 5825)]