661375

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1$

素因数の和:76

約数の個数: 32

約数和(自身を含む): 995904

約数和(自身を除く): 334529

約数列:

[1, 5, 11, 13, 25, 37, 55, 65, 125, 143, 185, 275, 325, 407, 481, 715, 925, 1375, 1625, 2035, 2405, 3575, 4625, 5291, 10175, 12025, 17875, 26455, 50875, 60125, 132275, 661375]

約数ペア:

[(1, 661375), (5, 132275), (11, 60125), (13, 50875), (25, 26455), (37, 17875), (55, 12025), (65, 10175), (125, 5291), (143, 4625), (185, 3575), (275, 2405), (325, 2035), (407, 1625), (481, 1375), (715, 925)]