20787416

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{1979}}^1$

素因数の和:2099

約数の個数: 32

約数和(自身を含む): 42411600

約数和(自身を除く): 21624184

約数列:

[1, 2, 4, 8, 13, 26, 52, 101, 104, 202, 404, 808, 1313, 1979, 2626, 3958, 5252, 7916, 10504, 15832, 25727, 51454, 102908, 199879, 205816, 399758, 799516, 1599032, 2598427, 5196854, 10393708, 20787416]

約数ペア:

[(1, 20787416), (2, 10393708), (4, 5196854), (8, 2598427), (13, 1599032), (26, 799516), (52, 399758), (101, 205816), (104, 199879), (202, 102908), (404, 51454), (808, 25727), (1313, 15832), (1979, 10504), (2626, 7916), (3958, 5252)]