21980348

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{3041}}^1$

素因数の和:3197

約数の個数: 24

約数和(自身を含む): 41736240

約数和(自身を除く): 19755892

約数列:

[1, 2, 4, 13, 26, 52, 139, 278, 556, 1807, 3041, 3614, 6082, 7228, 12164, 39533, 79066, 158132, 422699, 845398, 1690796, 5495087, 10990174, 21980348]

約数ペア:

[(1, 21980348), (2, 10990174), (4, 5495087), (13, 1690796), (26, 845398), (52, 422699), (139, 158132), (278, 79066), (556, 39533), (1807, 12164), (3041, 7228), (3614, 6082)]