20954908

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{5101}}^1$

素因数の和:5197

約数の個数: 24

約数和(自身を含む): 39999680

約数和(自身を除く): 19044772

約数列:

[1, 2, 4, 13, 26, 52, 79, 158, 316, 1027, 2054, 4108, 5101, 10202, 20404, 66313, 132626, 265252, 402979, 805958, 1611916, 5238727, 10477454, 20954908]

約数ペア:

[(1, 20954908), (2, 10477454), (4, 5238727), (13, 1611916), (26, 805958), (52, 402979), (79, 265252), (158, 132626), (316, 66313), (1027, 20404), (2054, 10202), (4108, 5101)]