20110940

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{199}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 44083200

約数和(自身を除く): 23972260

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 163, 199, 310, 326, 398, 620, 652, 796, 815, 995, 1630, 1990, 3260, 3980, 5053, 6169, 10106, 12338, 20212, 24676, 25265, 30845, 32437, 50530, 61690, 64874, 101060, 123380, 129748, 162185, 324370, 648740, 1005547, 2011094, 4022188, 5027735, 10055470, 20110940]

約数ペア:

[(1, 20110940), (2, 10055470), (4, 5027735), (5, 4022188), (10, 2011094), (20, 1005547), (31, 648740), (62, 324370), (124, 162185), (155, 129748), (163, 123380), (199, 101060), (310, 64874), (326, 61690), (398, 50530), (620, 32437), (652, 30845), (796, 25265), (815, 24676), (995, 20212), (1630, 12338), (1990, 10106), (3260, 6169), (3980, 5053)]