209549240

素因数分解:

$2^3\times 5^1\times {\mathrm{5238731}}^1$

素因数の和:5238742

約数の個数: 16

約数和(自身を含む): 471485880

約数和(自身を除く): 261936640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5238731, 10477462, 20954924, 26193655, 41909848, 52387310, 104774620, 209549240]

約数ペア:

[(1, 209549240), (2, 104774620), (4, 52387310), (5, 41909848), (8, 26193655), (10, 20954924), (20, 10477462), (40, 5238731)]