20106429

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{229}}^1$

素因数の和:389

約数の個数: 32

約数和(自身を含む): 31883520

約数和(自身を除く): 11777091

約数列:

[1, 3, 7, 21, 37, 111, 113, 229, 259, 339, 687, 777, 791, 1603, 2373, 4181, 4809, 8473, 12543, 25419, 25877, 29267, 59311, 77631, 87801, 177933, 181139, 543417, 957449, 2872347, 6702143, 20106429]

約数ペア:

[(1, 20106429), (3, 6702143), (7, 2872347), (21, 957449), (37, 543417), (111, 181139), (113, 177933), (229, 87801), (259, 77631), (339, 59311), (687, 29267), (777, 25877), (791, 25419), (1603, 12543), (2373, 8473), (4181, 4809)]