20643048280

素因数分解:

$2^3\times 5^1\times {\mathrm{277}}^1\times {\mathrm{1863091}}^1$

素因数の和:1863379

約数の個数: 32

約数和(自身を含む): 46614561840

約数和(自身を除く): 25971513560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 277, 554, 1108, 1385, 2216, 2770, 5540, 11080, 1863091, 3726182, 7452364, 9315455, 14904728, 18630910, 37261820, 74523640, 516076207, 1032152414, 2064304828, 2580381035, 4128609656, 5160762070, 10321524140, 20643048280]

約数ペア:

[(1, 20643048280), (2, 10321524140), (4, 5160762070), (5, 4128609656), (8, 2580381035), (10, 2064304828), (20, 1032152414), (40, 516076207), (277, 74523640), (554, 37261820), (1108, 18630910), (1385, 14904728), (2216, 9315455), (2770, 7452364), (5540, 3726182), (11080, 1863091)]