20857148

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{13831}}^1$

素因数の和:13877

約数の個数: 24

約数和(自身を含む): 40666080

約数和(自身を除く): 19808932

約数列:

[1, 2, 4, 13, 26, 29, 52, 58, 116, 377, 754, 1508, 13831, 27662, 55324, 179803, 359606, 401099, 719212, 802198, 1604396, 5214287, 10428574, 20857148]

約数ペア:

[(1, 20857148), (2, 10428574), (4, 5214287), (13, 1604396), (26, 802198), (29, 719212), (52, 401099), (58, 359606), (116, 179803), (377, 55324), (754, 27662), (1508, 13831)]