20828612

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{113}}^1\times {\mathrm{227}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 43666560

約数和(自身を除く): 22837948

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 113, 116, 203, 226, 227, 406, 452, 454, 791, 812, 908, 1582, 1589, 3164, 3178, 3277, 6356, 6554, 6583, 13108, 13166, 22939, 25651, 26332, 45878, 46081, 51302, 91756, 92162, 102604, 179557, 184324, 359114, 718228, 743879, 1487758, 2975516, 5207153, 10414306, 20828612]

約数ペア:

[(1, 20828612), (2, 10414306), (4, 5207153), (7, 2975516), (14, 1487758), (28, 743879), (29, 718228), (58, 359114), (113, 184324), (116, 179557), (203, 102604), (226, 92162), (227, 91756), (406, 51302), (452, 46081), (454, 45878), (791, 26332), (812, 25651), (908, 22939), (1582, 13166), (1589, 13108), (3164, 6583), (3178, 6554), (3277, 6356)]