18508990

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{199}}^1$

素因数の和:408

約数の個数: 32

約数和(自身を含む): 34214400

約数和(自身を除く): 15705410

約数列:

[1, 2, 5, 10, 71, 131, 142, 199, 262, 355, 398, 655, 710, 995, 1310, 1990, 9301, 14129, 18602, 26069, 28258, 46505, 52138, 70645, 93010, 130345, 141290, 260690, 1850899, 3701798, 9254495, 18508990]

約数ペア:

[(1, 18508990), (2, 9254495), (5, 3701798), (10, 1850899), (71, 260690), (131, 141290), (142, 130345), (199, 93010), (262, 70645), (355, 52138), (398, 46505), (655, 28258), (710, 26069), (995, 18602), (1310, 14129), (1990, 9301)]