20851927473

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1655309}}^1$

素因数の和:1655361

約数の個数: 32

約数和(自身を含む): 33371049600

約数和(自身を除く): 12519122127

約数列:

[1, 3, 13, 17, 19, 39, 51, 57, 221, 247, 323, 663, 741, 969, 4199, 12597, 1655309, 4965927, 21519017, 28140253, 31450871, 64557051, 84420759, 94352613, 365823289, 408861323, 534664807, 1097469867, 1226583969, 1603994421, 6950642491, 20851927473]

約数ペア:

[(1, 20851927473), (3, 6950642491), (13, 1603994421), (17, 1226583969), (19, 1097469867), (39, 534664807), (51, 408861323), (57, 365823289), (221, 94352613), (247, 84420759), (323, 64557051), (663, 31450871), (741, 28140253), (969, 21519017), (4199, 4965927), (12597, 1655309)]