220197640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{423457}}^1$

素因数の和:423481

約数の個数: 32

約数和(自身を含む): 533557080

約数和(自身を除く): 313359440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 423457, 846914, 1693828, 2117285, 3387656, 4234570, 5504941, 8469140, 11009882, 16938280, 22019764, 27524705, 44039528, 55049410, 110098820, 220197640]

約数ペア:

[(1, 220197640), (2, 110098820), (4, 55049410), (5, 44039528), (8, 27524705), (10, 22019764), (13, 16938280), (20, 11009882), (26, 8469140), (40, 5504941), (52, 4234570), (65, 3387656), (104, 2117285), (130, 1693828), (260, 846914), (520, 423457)]