209418385

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{1213}}^1$

素因数の和:1345

約数の個数: 32

約数和(自身を含む): 284600448

約数和(自身を除く): 75182063

約数列:

[1, 5, 11, 43, 55, 73, 215, 365, 473, 803, 1213, 2365, 3139, 4015, 6065, 13343, 15695, 34529, 52159, 66715, 88549, 172645, 260795, 442745, 573749, 974039, 2868745, 3807607, 4870195, 19038035, 41883677, 209418385]

約数ペア:

[(1, 209418385), (5, 41883677), (11, 19038035), (43, 4870195), (55, 3807607), (73, 2868745), (215, 974039), (365, 573749), (473, 442745), (803, 260795), (1213, 172645), (2365, 88549), (3139, 66715), (4015, 52159), (6065, 34529), (13343, 15695)]