20387178

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{239}}^1\times {\mathrm{677}}^1$

素因数の和:931

約数の個数: 48

約数和(自身を含む): 50768640

約数和(自身を除く): 30381462

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 239, 478, 677, 717, 1354, 1434, 1673, 2031, 2151, 3346, 4062, 4302, 4739, 5019, 6093, 9478, 10038, 12186, 14217, 15057, 28434, 30114, 42651, 85302, 161803, 323606, 485409, 970818, 1132621, 1456227, 2265242, 2912454, 3397863, 6795726, 10193589, 20387178]

約数ペア:

[(1, 20387178), (2, 10193589), (3, 6795726), (6, 3397863), (7, 2912454), (9, 2265242), (14, 1456227), (18, 1132621), (21, 970818), (42, 485409), (63, 323606), (126, 161803), (239, 85302), (478, 42651), (677, 30114), (717, 28434), (1354, 15057), (1434, 14217), (1673, 12186), (2031, 10038), (2151, 9478), (3346, 6093), (4062, 5019), (4302, 4739)]