21940904

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{151}}^1\times {\mathrm{443}}^1$

素因数の和:641

約数の個数: 32

約数和(自身を含む): 42517440

約数和(自身を除く): 20576536

約数列:

[1, 2, 4, 8, 41, 82, 151, 164, 302, 328, 443, 604, 886, 1208, 1772, 3544, 6191, 12382, 18163, 24764, 36326, 49528, 66893, 72652, 133786, 145304, 267572, 535144, 2742613, 5485226, 10970452, 21940904]

約数ペア:

[(1, 21940904), (2, 10970452), (4, 5485226), (8, 2742613), (41, 535144), (82, 267572), (151, 145304), (164, 133786), (302, 72652), (328, 66893), (443, 49528), (604, 36326), (886, 24764), (1208, 18163), (1772, 12382), (3544, 6191)]