21419575

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{499}}^1$

素因数の和:627

約数の個数: 24

約数和(自身を含む): 28458000

約数和(自身を除く): 7038425

約数列:

[1, 5, 17, 25, 85, 101, 425, 499, 505, 1717, 2495, 2525, 8483, 8585, 12475, 42415, 42925, 50399, 212075, 251995, 856783, 1259975, 4283915, 21419575]

約数ペア:

[(1, 21419575), (5, 4283915), (17, 1259975), (25, 856783), (85, 251995), (101, 212075), (425, 50399), (499, 42925), (505, 42415), (1717, 12475), (2495, 8585), (2525, 8483)]