20931484

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{18233}}^1$

素因数の和:18285

約数の個数: 24

約数和(自身を含む): 42886368

約数和(自身を除く): 21954884

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 574, 1148, 18233, 36466, 72932, 127631, 255262, 510524, 747553, 1495106, 2990212, 5232871, 10465742, 20931484]

約数ペア:

[(1, 20931484), (2, 10465742), (4, 5232871), (7, 2990212), (14, 1495106), (28, 747553), (41, 510524), (82, 255262), (164, 127631), (287, 72932), (574, 36466), (1148, 18233)]