18530920

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{8741}}^1$

素因数の和:8805

約数の個数: 32

約数和(自身を含む): 42486120

約数和(自身を除く): 23955200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 8741, 17482, 34964, 43705, 69928, 87410, 174820, 349640, 463273, 926546, 1853092, 2316365, 3706184, 4632730, 9265460, 18530920]

約数ペア:

[(1, 18530920), (2, 9265460), (4, 4632730), (5, 3706184), (8, 2316365), (10, 1853092), (20, 926546), (40, 463273), (53, 349640), (106, 174820), (212, 87410), (265, 69928), (424, 43705), (530, 34964), (1060, 17482), (2120, 8741)]