251115980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{306239}}^1$

素因数の和:306289

約数の個数: 24

約数和(自身を含む): 540207360

約数和(自身を除く): 289091380

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 306239, 612478, 1224956, 1531195, 3062390, 6124780, 12555799, 25111598, 50223196, 62778995, 125557990, 251115980]

約数ペア:

[(1, 251115980), (2, 125557990), (4, 62778995), (5, 50223196), (10, 25111598), (20, 12555799), (41, 6124780), (82, 3062390), (164, 1531195), (205, 1224956), (410, 612478), (820, 306239)]