21546460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1049}}^1$

素因数の和:1150

約数の個数: 48

約数和(自身を含む): 49392000

約数和(自身を除く): 27845540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 260, 316, 395, 790, 1027, 1049, 1580, 2054, 2098, 4108, 4196, 5135, 5245, 10270, 10490, 13637, 20540, 20980, 27274, 54548, 68185, 82871, 136370, 165742, 272740, 331484, 414355, 828710, 1077323, 1657420, 2154646, 4309292, 5386615, 10773230, 21546460]

約数ペア:

[(1, 21546460), (2, 10773230), (4, 5386615), (5, 4309292), (10, 2154646), (13, 1657420), (20, 1077323), (26, 828710), (52, 414355), (65, 331484), (79, 272740), (130, 165742), (158, 136370), (260, 82871), (316, 68185), (395, 54548), (790, 27274), (1027, 20980), (1049, 20540), (1580, 13637), (2054, 10490), (2098, 10270), (4108, 5245), (4196, 5135)]