20872228

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{13841}}^1$

素因数の和:13887

約数の個数: 24

約数和(自身を含む): 40695480

約数和(自身を除く): 19823252

約数列:

[1, 2, 4, 13, 26, 29, 52, 58, 116, 377, 754, 1508, 13841, 27682, 55364, 179933, 359866, 401389, 719732, 802778, 1605556, 5218057, 10436114, 20872228]

約数ペア:

[(1, 20872228), (2, 10436114), (4, 5218057), (13, 1605556), (26, 802778), (29, 719732), (52, 401389), (58, 359866), (116, 179933), (377, 55364), (754, 27682), (1508, 13841)]