20138972

素因数分解:

$2^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{6983}}^1$

素因数の和:7097

約数の個数: 24

約数和(自身を含む): 40674816

約数和(自身を除く): 20535844

約数列:

[1, 2, 4, 7, 14, 28, 103, 206, 412, 721, 1442, 2884, 6983, 13966, 27932, 48881, 97762, 195524, 719249, 1438498, 2876996, 5034743, 10069486, 20138972]

約数ペア:

[(1, 20138972), (2, 10069486), (4, 5034743), (7, 2876996), (14, 1438498), (28, 719249), (103, 195524), (206, 97762), (412, 48881), (721, 27932), (1442, 13966), (2884, 6983)]