21298575

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{12347}}^1$

素因数の和:12383

約数の個数: 24

約数和(自身を含む): 36747648

約数和(自身を除く): 15449073

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 115, 345, 575, 1725, 12347, 37041, 61735, 185205, 283981, 308675, 851943, 926025, 1419905, 4259715, 7099525, 21298575]

約数ペア:

[(1, 21298575), (3, 7099525), (5, 4259715), (15, 1419905), (23, 926025), (25, 851943), (69, 308675), (75, 283981), (115, 185205), (345, 61735), (575, 37041), (1725, 12347)]