128520016

素因数分解:

$2^4\times {\mathrm{397}}^1\times {\mathrm{20233}}^1$

素因数の和:20638

約数の個数: 20

約数和(自身を含む): 249647092

約数和(自身を除く): 121127076

約数列:

[1, 2, 4, 8, 16, 397, 794, 1588, 3176, 6352, 20233, 40466, 80932, 161864, 323728, 8032501, 16065002, 32130004, 64260008, 128520016]

約数ペア:

[(1, 128520016), (2, 64260008), (4, 32130004), (8, 16065002), (16, 8032501), (397, 323728), (794, 161864), (1588, 80932), (3176, 40466), (6352, 20233)]