20478836

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{233}}^1$

素因数の和:360

約数の個数: 48

約数和(自身を含む): 42666624

約数和(自身を除く): 22187788

約数列:

[1, 2, 4, 7, 14, 28, 43, 73, 86, 146, 172, 233, 292, 301, 466, 511, 602, 932, 1022, 1204, 1631, 2044, 3139, 3262, 6278, 6524, 10019, 12556, 17009, 20038, 21973, 34018, 40076, 43946, 68036, 70133, 87892, 119063, 140266, 238126, 280532, 476252, 731387, 1462774, 2925548, 5119709, 10239418, 20478836]

約数ペア:

[(1, 20478836), (2, 10239418), (4, 5119709), (7, 2925548), (14, 1462774), (28, 731387), (43, 476252), (73, 280532), (86, 238126), (146, 140266), (172, 119063), (233, 87892), (292, 70133), (301, 68036), (466, 43946), (511, 40076), (602, 34018), (932, 21973), (1022, 20038), (1204, 17009), (1631, 12556), (2044, 10019), (3139, 6524), (3262, 6278)]