20814872

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{761}}^1$

素因数の和:1043

約数の個数: 32

約数和(自身を含む): 42245280

約数和(自身を除く): 21430408

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 263, 526, 761, 1052, 1522, 2104, 3044, 3419, 6088, 6838, 9893, 13676, 19786, 27352, 39572, 79144, 200143, 400286, 800572, 1601144, 2601859, 5203718, 10407436, 20814872]

約数ペア:

[(1, 20814872), (2, 10407436), (4, 5203718), (8, 2601859), (13, 1601144), (26, 800572), (52, 400286), (104, 200143), (263, 79144), (526, 39572), (761, 27352), (1052, 19786), (1522, 13676), (2104, 9893), (3044, 6838), (3419, 6088)]