20109260

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{311}}^1$

素因数の和:434

約数の個数: 48

約数和(自身を含む): 43872192

約数和(自身を除く): 23762932

約数列:

[1, 2, 4, 5, 10, 20, 53, 61, 106, 122, 212, 244, 265, 305, 311, 530, 610, 622, 1060, 1220, 1244, 1555, 3110, 3233, 6220, 6466, 12932, 16165, 16483, 18971, 32330, 32966, 37942, 64660, 65932, 75884, 82415, 94855, 164830, 189710, 329660, 379420, 1005463, 2010926, 4021852, 5027315, 10054630, 20109260]

約数ペア:

[(1, 20109260), (2, 10054630), (4, 5027315), (5, 4021852), (10, 2010926), (20, 1005463), (53, 379420), (61, 329660), (106, 189710), (122, 164830), (212, 94855), (244, 82415), (265, 75884), (305, 65932), (311, 64660), (530, 37942), (610, 32966), (622, 32330), (1060, 18971), (1220, 16483), (1244, 16165), (1555, 12932), (3110, 6466), (3233, 6220)]