20640544

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{20807}}^1$

素因数の和:20848

約数の個数: 24

約数和(自身を含む): 41948928

約数和(自身を除く): 21308384

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 124, 248, 496, 992, 20807, 41614, 83228, 166456, 332912, 645017, 665824, 1290034, 2580068, 5160136, 10320272, 20640544]

約数ペア:

[(1, 20640544), (2, 10320272), (4, 5160136), (8, 2580068), (16, 1290034), (31, 665824), (32, 645017), (62, 332912), (124, 166456), (248, 83228), (496, 41614), (992, 20807)]