21904480

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{10531}}^1$

素因数の和:10559

約数の個数: 48

約数和(自身を含む): 55735344

約数和(自身を除く): 33830864

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 10531, 21062, 42124, 52655, 84248, 105310, 136903, 168496, 210620, 273806, 336992, 421240, 547612, 684515, 842480, 1095224, 1369030, 1684960, 2190448, 2738060, 4380896, 5476120, 10952240, 21904480]

約数ペア:

[(1, 21904480), (2, 10952240), (4, 5476120), (5, 4380896), (8, 2738060), (10, 2190448), (13, 1684960), (16, 1369030), (20, 1095224), (26, 842480), (32, 684515), (40, 547612), (52, 421240), (65, 336992), (80, 273806), (104, 210620), (130, 168496), (160, 136903), (208, 105310), (260, 84248), (416, 52655), (520, 42124), (1040, 21062), (2080, 10531)]