15821205

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1291}}^1$

素因数の和:1361

約数の個数: 32

約数和(自身を含む): 27287040

約数和(自身を除く): 11465835

約数列:

[1, 3, 5, 15, 19, 43, 57, 95, 129, 215, 285, 645, 817, 1291, 2451, 3873, 4085, 6455, 12255, 19365, 24529, 55513, 73587, 122645, 166539, 277565, 367935, 832695, 1054747, 3164241, 5273735, 15821205]

約数ペア:

[(1, 15821205), (3, 5273735), (5, 3164241), (15, 1054747), (19, 832695), (43, 367935), (57, 277565), (95, 166539), (129, 122645), (215, 73587), (285, 55513), (645, 24529), (817, 19365), (1291, 12255), (2451, 6455), (3873, 4085)]