20861992

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{727}}^1$

素因数の和:961

約数の個数: 32

約数和(自身を含む): 41670720

約数和(自身を除く): 20808728

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 211, 422, 727, 844, 1454, 1688, 2908, 3587, 5816, 7174, 12359, 14348, 24718, 28696, 49436, 98872, 153397, 306794, 613588, 1227176, 2607749, 5215498, 10430996, 20861992]

約数ペア:

[(1, 20861992), (2, 10430996), (4, 5215498), (8, 2607749), (17, 1227176), (34, 613588), (68, 306794), (136, 153397), (211, 98872), (422, 49436), (727, 28696), (844, 24718), (1454, 14348), (1688, 12359), (2908, 7174), (3587, 5816)]