213882921

素因数分解:

$3^2\times 7^1\times {\mathrm{241}}^1\times {\mathrm{14087}}^1$

素因数の和:14341

約数の個数: 24

約数和(自身を含む): 354566784

約数和(自身を除く): 140683863

約数列:

[1, 3, 7, 9, 21, 63, 241, 723, 1687, 2169, 5061, 14087, 15183, 42261, 98609, 126783, 295827, 887481, 3394967, 10184901, 23764769, 30554703, 71294307, 213882921]

約数ペア:

[(1, 213882921), (3, 71294307), (7, 30554703), (9, 23764769), (21, 10184901), (63, 3394967), (241, 887481), (723, 295827), (1687, 126783), (2169, 98609), (5061, 42261), (14087, 15183)]