81136875

素因数分解:

$3^1\times 5^4\times {\mathrm{109}}^1\times {\mathrm{397}}^1$

素因数の和:529

約数の個数: 40

約数和(自身を含む): 136768720

約数和(自身を除く): 55631845

約数列:

[1, 3, 5, 15, 25, 75, 109, 125, 327, 375, 397, 545, 625, 1191, 1635, 1875, 1985, 2725, 5955, 8175, 9925, 13625, 29775, 40875, 43273, 49625, 68125, 129819, 148875, 204375, 216365, 248125, 649095, 744375, 1081825, 3245475, 5409125, 16227375, 27045625, 81136875]

約数ペア:

[(1, 81136875), (3, 27045625), (5, 16227375), (15, 5409125), (25, 3245475), (75, 1081825), (109, 744375), (125, 649095), (327, 248125), (375, 216365), (397, 204375), (545, 148875), (625, 129819), (1191, 68125), (1635, 49625), (1875, 43273), (1985, 40875), (2725, 29775), (5955, 13625), (8175, 9925)]