21738028

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{4139}}^1$

素因数の和:4257

約数の個数: 24

約数和(自身を含む): 41383440

約数和(自身を除く): 19645412

約数列:

[1, 2, 4, 13, 26, 52, 101, 202, 404, 1313, 2626, 4139, 5252, 8278, 16556, 53807, 107614, 215228, 418039, 836078, 1672156, 5434507, 10869014, 21738028]

約数ペア:

[(1, 21738028), (2, 10869014), (4, 5434507), (13, 1672156), (26, 836078), (52, 418039), (101, 215228), (202, 107614), (404, 53807), (1313, 16556), (2626, 8278), (4139, 5252)]