20628309

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1$

素因数の和:142

約数の個数: 48

約数和(自身を含む): 32676480

約数和(自身を除く): 12048171

約数列:

[1, 3, 13, 23, 29, 39, 61, 69, 87, 169, 183, 299, 377, 507, 667, 793, 897, 1131, 1403, 1769, 2001, 2379, 3887, 4209, 4901, 5307, 8671, 10309, 11661, 14703, 18239, 22997, 26013, 30927, 40687, 54717, 68991, 112723, 122061, 237107, 298961, 338169, 528931, 711321, 896883, 1586793, 6876103, 20628309]

約数ペア:

[(1, 20628309), (3, 6876103), (13, 1586793), (23, 896883), (29, 711321), (39, 528931), (61, 338169), (69, 298961), (87, 237107), (169, 122061), (183, 112723), (299, 68991), (377, 54717), (507, 40687), (667, 30927), (793, 26013), (897, 22997), (1131, 18239), (1403, 14703), (1769, 11661), (2001, 10309), (2379, 8671), (3887, 5307), (4209, 4901)]