20400976

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{41131}}^1$

素因数の和:41170

約数の個数: 20

約数和(自身を含む): 40802944

約数和(自身を除く): 20401968

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 41131, 82262, 164524, 329048, 658096, 1275061, 2550122, 5100244, 10200488, 20400976]

約数ペア:

[(1, 20400976), (2, 10200488), (4, 5100244), (8, 2550122), (16, 1275061), (31, 658096), (62, 329048), (124, 164524), (248, 82262), (496, 41131)]