20851918353

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{17420149}}^1$

素因数の和:17420181

約数の個数: 24

約数和(自身を含む): 36233912000

約数和(自身を除く): 15381993647

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 17420149, 52260447, 121941043, 156781341, 330982831, 365823129, 992948493, 1097469387, 2316879817, 2978845479, 6950639451, 20851918353]

約数ペア:

[(1, 20851918353), (3, 6950639451), (7, 2978845479), (9, 2316879817), (19, 1097469387), (21, 992948493), (57, 365823129), (63, 330982831), (133, 156781341), (171, 121941043), (399, 52260447), (1197, 17420149)]