87701980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{257947}}^1$

素因数の和:257973

約数の個数: 24

約数和(自身を含む): 195008688

約数和(自身を除く): 107306708

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 257947, 515894, 1031788, 1289735, 2579470, 4385099, 5158940, 8770198, 17540396, 21925495, 43850990, 87701980]

約数ペア:

[(1, 87701980), (2, 43850990), (4, 21925495), (5, 17540396), (10, 8770198), (17, 5158940), (20, 4385099), (34, 2579470), (68, 1289735), (85, 1031788), (170, 515894), (340, 257947)]