18920187

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{241}}^1$

素因数の和:332

約数の個数: 48

約数和(自身を含む): 32768736

約数和(自身を除く): 13848549

約数列:

[1, 3, 9, 11, 13, 33, 39, 61, 99, 117, 143, 183, 241, 429, 549, 671, 723, 793, 1287, 2013, 2169, 2379, 2651, 3133, 6039, 7137, 7953, 8723, 9399, 14701, 23859, 26169, 28197, 34463, 44103, 78507, 103389, 132309, 161711, 191113, 310167, 485133, 573339, 1455399, 1720017, 2102243, 6306729, 18920187]

約数ペア:

[(1, 18920187), (3, 6306729), (9, 2102243), (11, 1720017), (13, 1455399), (33, 573339), (39, 485133), (61, 310167), (99, 191113), (117, 161711), (143, 132309), (183, 103389), (241, 78507), (429, 44103), (549, 34463), (671, 28197), (723, 26169), (793, 23859), (1287, 14701), (2013, 9399), (2169, 8723), (2379, 7953), (2651, 7137), (3133, 6039)]