19178120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2837}}^1$

素因数の和:2874

約数の個数: 48

約数和(自身を含む): 46741860

約数和(自身を除く): 27563740

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 260, 338, 520, 676, 845, 1352, 1690, 2837, 3380, 5674, 6760, 11348, 14185, 22696, 28370, 36881, 56740, 73762, 113480, 147524, 184405, 295048, 368810, 479453, 737620, 958906, 1475240, 1917812, 2397265, 3835624, 4794530, 9589060, 19178120]

約数ペア:

[(1, 19178120), (2, 9589060), (4, 4794530), (5, 3835624), (8, 2397265), (10, 1917812), (13, 1475240), (20, 958906), (26, 737620), (40, 479453), (52, 368810), (65, 295048), (104, 184405), (130, 147524), (169, 113480), (260, 73762), (338, 56740), (520, 36881), (676, 28370), (845, 22696), (1352, 14185), (1690, 11348), (2837, 6760), (3380, 5674)]