19661125

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{181}}^1$

素因数の和:286

約数の個数: 32

約数和(自身を含む): 27256320

約数和(自身を除く): 7595195

約数列:

[1, 5, 11, 25, 55, 79, 125, 181, 275, 395, 869, 905, 1375, 1975, 1991, 4345, 4525, 9875, 9955, 14299, 21725, 22625, 49775, 71495, 108625, 157289, 248875, 357475, 786445, 1787375, 3932225, 19661125]

約数ペア:

[(1, 19661125), (5, 3932225), (11, 1787375), (25, 786445), (55, 357475), (79, 248875), (125, 157289), (181, 108625), (275, 71495), (395, 49775), (869, 22625), (905, 21725), (1375, 14299), (1975, 9955), (1991, 9875), (4345, 4525)]