217626320

素因数分解:

$2^4\times 5^1\times {\mathrm{2720329}}^1$

素因数の和:2720342

約数の個数: 20

約数和(自身を含む): 505981380

約数和(自身を除く): 288355060

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2720329, 5440658, 10881316, 13601645, 21762632, 27203290, 43525264, 54406580, 108813160, 217626320]

約数ペア:

[(1, 217626320), (2, 108813160), (4, 54406580), (5, 43525264), (8, 27203290), (10, 21762632), (16, 13601645), (20, 10881316), (40, 5440658), (80, 2720329)]