2181790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1291}}^1$

素因数の和:1324

約数の個数: 24

約数和(自身を含む): 4255848

約数和(自身を除く): 2074058

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1291, 1690, 2582, 6455, 12910, 16783, 33566, 83915, 167830, 218179, 436358, 1090895, 2181790]

約数ペア:

[(1, 2181790), (2, 1090895), (5, 436358), (10, 218179), (13, 167830), (26, 83915), (65, 33566), (130, 16783), (169, 12910), (338, 6455), (845, 2582), (1291, 1690)]