21905104

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{8101}}^1$

素因数の和:8135

約数の個数: 30

約数和(自身を含む): 45962646

約数和(自身を除く): 24057542

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 169, 208, 338, 676, 1352, 2704, 8101, 16202, 32404, 64808, 105313, 129616, 210626, 421252, 842504, 1369069, 1685008, 2738138, 5476276, 10952552, 21905104]

約数ペア:

[(1, 21905104), (2, 10952552), (4, 5476276), (8, 2738138), (13, 1685008), (16, 1369069), (26, 842504), (52, 421252), (104, 210626), (169, 129616), (208, 105313), (338, 64808), (676, 32404), (1352, 16202), (2704, 8101)]