12767980

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{8081}}^1$

素因数の和:8169

約数の個数: 24

約数和(自身を含む): 27155520

約数和(自身を除く): 14387540

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 8081, 16162, 32324, 40405, 80810, 161620, 638399, 1276798, 2553596, 3191995, 6383990, 12767980]

約数ペア:

[(1, 12767980), (2, 6383990), (4, 3191995), (5, 2553596), (10, 1276798), (20, 638399), (79, 161620), (158, 80810), (316, 40405), (395, 32324), (790, 16162), (1580, 8081)]