21770145

素因数分解:

$3^2\times 5^1\times {\mathrm{373}}^1\times {\mathrm{1297}}^1$

素因数の和:1681

約数の個数: 24

約数和(自身を含む): 37865256

約数和(自身を除く): 16095111

約数列:

[1, 3, 5, 9, 15, 45, 373, 1119, 1297, 1865, 3357, 3891, 5595, 6485, 11673, 16785, 19455, 58365, 483781, 1451343, 2418905, 4354029, 7256715, 21770145]

約数ペア:

[(1, 21770145), (3, 7256715), (5, 4354029), (9, 2418905), (15, 1451343), (45, 483781), (373, 58365), (1119, 19455), (1297, 16785), (1865, 11673), (3357, 6485), (3891, 5595)]