20299671

素因数分解:

$3^2\times 7^2\times {\mathrm{191}}^1\times {\mathrm{241}}^1$

素因数の和:452

約数の個数: 36

約数和(自身を含む): 34429824

約数和(自身を除く): 14130153

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 191, 241, 441, 573, 723, 1337, 1687, 1719, 2169, 4011, 5061, 9359, 11809, 12033, 15183, 28077, 35427, 46031, 84231, 106281, 138093, 322217, 414279, 966651, 2255519, 2899953, 6766557, 20299671]

約数ペア:

[(1, 20299671), (3, 6766557), (7, 2899953), (9, 2255519), (21, 966651), (49, 414279), (63, 322217), (147, 138093), (191, 106281), (241, 84231), (441, 46031), (573, 35427), (723, 28077), (1337, 15183), (1687, 12033), (1719, 11809), (2169, 9359), (4011, 5061)]