20951154

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{257}}^1\times {\mathrm{647}}^1$

素因数の和:919

約数の個数: 48

約数和(自身を含む): 52161408

約数和(自身を除く): 31210254

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 257, 514, 647, 771, 1294, 1542, 1799, 1941, 2313, 3598, 3882, 4529, 4626, 5397, 5823, 9058, 10794, 11646, 13587, 16191, 27174, 32382, 40761, 81522, 166279, 332558, 498837, 997674, 1163953, 1496511, 2327906, 2993022, 3491859, 6983718, 10475577, 20951154]

約数ペア:

[(1, 20951154), (2, 10475577), (3, 6983718), (6, 3491859), (7, 2993022), (9, 2327906), (14, 1496511), (18, 1163953), (21, 997674), (42, 498837), (63, 332558), (126, 166279), (257, 81522), (514, 40761), (647, 32382), (771, 27174), (1294, 16191), (1542, 13587), (1799, 11646), (1941, 10794), (2313, 9058), (3598, 5823), (3882, 5397), (4529, 4626)]