21445684

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{1301}}^1$

素因数の和:1635

約数の個数: 24

約数和(自身を含む): 40575528

約数和(自身を除く): 19129844

約数列:

[1, 2, 4, 13, 26, 52, 317, 634, 1268, 1301, 2602, 4121, 5204, 8242, 16484, 16913, 33826, 67652, 412417, 824834, 1649668, 5361421, 10722842, 21445684]

約数ペア:

[(1, 21445684), (2, 10722842), (4, 5361421), (13, 1649668), (26, 824834), (52, 412417), (317, 67652), (634, 33826), (1268, 16913), (1301, 16484), (2602, 8242), (4121, 5204)]