21246849

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{229}}^1$

素因数の和:322

約数の個数: 36

約数和(自身を含む): 33924540

約数和(自身を除く): 12677691

約数列:

[1, 3, 9, 13, 39, 61, 117, 169, 183, 229, 507, 549, 687, 793, 1521, 2061, 2379, 2977, 7137, 8931, 10309, 13969, 26793, 30927, 38701, 41907, 92781, 116103, 125721, 181597, 348309, 544791, 1634373, 2360761, 7082283, 21246849]

約数ペア:

[(1, 21246849), (3, 7082283), (9, 2360761), (13, 1634373), (39, 544791), (61, 348309), (117, 181597), (169, 125721), (183, 116103), (229, 92781), (507, 41907), (549, 38701), (687, 30927), (793, 26793), (1521, 13969), (2061, 10309), (2379, 8931), (2977, 7137)]