21341060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1039}}^1$

素因数の和:1140

約数の個数: 48

約数和(自身を含む): 48921600

約数和(自身を除く): 27580540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 260, 316, 395, 790, 1027, 1039, 1580, 2054, 2078, 4108, 4156, 5135, 5195, 10270, 10390, 13507, 20540, 20780, 27014, 54028, 67535, 82081, 135070, 164162, 270140, 328324, 410405, 820810, 1067053, 1641620, 2134106, 4268212, 5335265, 10670530, 21341060]

約数ペア:

[(1, 21341060), (2, 10670530), (4, 5335265), (5, 4268212), (10, 2134106), (13, 1641620), (20, 1067053), (26, 820810), (52, 410405), (65, 328324), (79, 270140), (130, 164162), (158, 135070), (260, 82081), (316, 67535), (395, 54028), (790, 27014), (1027, 20780), (1039, 20540), (1580, 13507), (2054, 10390), (2078, 10270), (4108, 5195), (4156, 5135)]