21595990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{613}}^1$

素因数の和:904

約数の個数: 32

約数和(自身を含む): 42086016

約数和(自身を除く): 20490026

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 271, 542, 613, 1226, 1355, 2710, 3065, 3523, 6130, 7046, 7969, 15938, 17615, 35230, 39845, 79690, 166123, 332246, 830615, 1661230, 2159599, 4319198, 10797995, 21595990]

約数ペア:

[(1, 21595990), (2, 10797995), (5, 4319198), (10, 2159599), (13, 1661230), (26, 830615), (65, 332246), (130, 166123), (271, 79690), (542, 39845), (613, 35230), (1226, 17615), (1355, 15938), (2710, 7969), (3065, 7046), (3523, 6130)]