261330407990

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{637391239}}^1$

素因数の和:637391287

約数の個数: 16

約数和(自身を含む): 481867777440

約数和(自身を除く): 220537369450

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 637391239, 1274782478, 3186956195, 6373912390, 26133040799, 52266081598, 130665203995, 261330407990]

約数ペア:

[(1, 261330407990), (2, 130665203995), (5, 52266081598), (10, 26133040799), (41, 6373912390), (82, 3186956195), (205, 1274782478), (410, 637391239)]