21904454

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1$

素因数の和:213

約数の個数: 64

約数和(自身を含む): 42336000

約数和(自身を除く): 20431546

約数列:

[1, 2, 11, 13, 19, 22, 26, 29, 38, 58, 139, 143, 209, 247, 278, 286, 319, 377, 418, 494, 551, 638, 754, 1102, 1529, 1807, 2641, 2717, 3058, 3614, 4031, 4147, 5282, 5434, 6061, 7163, 8062, 8294, 12122, 14326, 19877, 29051, 34333, 39754, 44341, 52403, 58102, 68666, 76589, 78793, 88682, 104806, 153178, 157586, 377663, 576433, 755326, 842479, 995657, 1152866, 1684958, 1991314, 10952227, 21904454]

約数ペア:

[(1, 21904454), (2, 10952227), (11, 1991314), (13, 1684958), (19, 1152866), (22, 995657), (26, 842479), (29, 755326), (38, 576433), (58, 377663), (139, 157586), (143, 153178), (209, 104806), (247, 88682), (278, 78793), (286, 76589), (319, 68666), (377, 58102), (418, 52403), (494, 44341), (551, 39754), (638, 34333), (754, 29051), (1102, 19877), (1529, 14326), (1807, 12122), (2641, 8294), (2717, 8062), (3058, 7163), (3614, 6061), (4031, 5434), (4147, 5282)]