20356640

素因数分解:

$2^5\times 5^1\times {\mathrm{47}}^1\times {\mathrm{2707}}^1$

素因数の和:2769

約数の個数: 48

約数和(自身を含む): 49133952

約数和(自身を除く): 28777312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 80, 94, 160, 188, 235, 376, 470, 752, 940, 1504, 1880, 2707, 3760, 5414, 7520, 10828, 13535, 21656, 27070, 43312, 54140, 86624, 108280, 127229, 216560, 254458, 433120, 508916, 636145, 1017832, 1272290, 2035664, 2544580, 4071328, 5089160, 10178320, 20356640]

約数ペア:

[(1, 20356640), (2, 10178320), (4, 5089160), (5, 4071328), (8, 2544580), (10, 2035664), (16, 1272290), (20, 1017832), (32, 636145), (40, 508916), (47, 433120), (80, 254458), (94, 216560), (160, 127229), (188, 108280), (235, 86624), (376, 54140), (470, 43312), (752, 27070), (940, 21656), (1504, 13535), (1880, 10828), (2707, 7520), (3760, 5414)]