21472225

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{349}}^1$

素因数の和:489

約数の個数: 24

約数和(自身を含む): 28123200

約数和(自身を除く): 6650975

約数列:

[1, 5, 23, 25, 107, 115, 349, 535, 575, 1745, 2461, 2675, 8027, 8725, 12305, 37343, 40135, 61525, 186715, 200675, 858889, 933575, 4294445, 21472225]

約数ペア:

[(1, 21472225), (5, 4294445), (23, 933575), (25, 858889), (107, 200675), (115, 186715), (349, 61525), (535, 40135), (575, 37343), (1745, 12305), (2461, 8725), (2675, 8027)]