28698725

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1321}}^1$

素因数の和:1421

約数の個数: 24

約数和(自身を含む): 39342720

約数和(自身を除く): 10643995

約数列:

[1, 5, 11, 25, 55, 79, 275, 395, 869, 1321, 1975, 4345, 6605, 14531, 21725, 33025, 72655, 104359, 363275, 521795, 1147949, 2608975, 5739745, 28698725]

約数ペア:

[(1, 28698725), (5, 5739745), (11, 2608975), (25, 1147949), (55, 521795), (79, 363275), (275, 104359), (395, 72655), (869, 33025), (1321, 21725), (1975, 14531), (4345, 6605)]