21081105615

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{811}}^1\times {\mathrm{55901}}^1$

素因数の和:56751

約数の個数: 32

約数和(自身を含む): 34861381632

約数和(自身を除く): 13780276017

約数列:

[1, 3, 5, 15, 31, 93, 155, 465, 811, 2433, 4055, 12165, 25141, 55901, 75423, 125705, 167703, 279505, 377115, 838515, 1732931, 5198793, 8664655, 25993965, 45335711, 136007133, 226678555, 680035665, 1405407041, 4216221123, 7027035205, 21081105615]

約数ペア:

[(1, 21081105615), (3, 7027035205), (5, 4216221123), (15, 1405407041), (31, 680035665), (93, 226678555), (155, 136007133), (465, 45335711), (811, 25993965), (2433, 8664655), (4055, 5198793), (12165, 1732931), (25141, 838515), (55901, 377115), (75423, 279505), (125705, 167703)]