20139974169

素因数分解:

$3^1\times 7^2\times {\mathrm{541}}^1\times {\mathrm{253247}}^1$

素因数の和:253805

約数の個数: 24

約数和(自身を含む): 31295374848

約数和(自身を除く): 11155400679

約数列:

[1, 3, 7, 21, 49, 147, 541, 1623, 3787, 11361, 26509, 79527, 253247, 759741, 1772729, 5318187, 12409103, 37227309, 137006627, 411019881, 959046389, 2877139167, 6713324723, 20139974169]

約数ペア:

[(1, 20139974169), (3, 6713324723), (7, 2877139167), (21, 959046389), (49, 411019881), (147, 137006627), (541, 37227309), (1623, 12409103), (3787, 5318187), (11361, 1772729), (26509, 759741), (79527, 253247)]