21663680

素因数分解:

$2^6\times 5^1\times {\mathrm{67699}}^1$

素因数の和:67716

約数の個数: 28

約数和(自身を含む): 51587400

約数和(自身を除く): 29923720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 67699, 135398, 270796, 338495, 541592, 676990, 1083184, 1353980, 2166368, 2707960, 4332736, 5415920, 10831840, 21663680]

約数ペア:

[(1, 21663680), (2, 10831840), (4, 5415920), (5, 4332736), (8, 2707960), (10, 2166368), (16, 1353980), (20, 1083184), (32, 676990), (40, 541592), (64, 338495), (80, 270796), (160, 135398), (320, 67699)]