20842479

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{7039}}^1$

素因数の和:7099

約数の個数: 24

約数和(自身を含む): 35143680

約数和(自身を除く): 14301201

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 7039, 21117, 49273, 63351, 147819, 330833, 443457, 992499, 2315831, 2977497, 6947493, 20842479]

約数ペア:

[(1, 20842479), (3, 6947493), (7, 2977497), (9, 2315831), (21, 992499), (47, 443457), (63, 330833), (141, 147819), (329, 63351), (423, 49273), (987, 21117), (2961, 7039)]