21226075

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{271}}^1$

素因数の和:535

約数の個数: 24

約数和(自身を含む): 28567616

約数和(自身を除く): 7341541

約数列:

[1, 5, 13, 25, 65, 241, 271, 325, 1205, 1355, 3133, 3523, 6025, 6775, 15665, 17615, 65311, 78325, 88075, 326555, 849043, 1632775, 4245215, 21226075]

約数ペア:

[(1, 21226075), (5, 4245215), (13, 1632775), (25, 849043), (65, 326555), (241, 88075), (271, 78325), (325, 65311), (1205, 17615), (1355, 15665), (3133, 6775), (3523, 6025)]