20625075

素因数分解:

$3^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{2957}}^1$

素因数の和:3004

約数の個数: 36

約数和(自身を含む): 38146368

約数和(自身を除く): 17521293

約数列:

[1, 3, 5, 9, 15, 25, 31, 45, 75, 93, 155, 225, 279, 465, 775, 1395, 2325, 2957, 6975, 8871, 14785, 26613, 44355, 73925, 91667, 133065, 221775, 275001, 458335, 665325, 825003, 1375005, 2291675, 4125015, 6875025, 20625075]

約数ペア:

[(1, 20625075), (3, 6875025), (5, 4125015), (9, 2291675), (15, 1375005), (25, 825003), (31, 665325), (45, 458335), (75, 275001), (93, 221775), (155, 133065), (225, 91667), (279, 73925), (465, 44355), (775, 26613), (1395, 14785), (2325, 8871), (2957, 6975)]