20154920

素因数分解:

$2^3\times 5^1\times {\mathrm{461}}^1\times {\mathrm{1093}}^1$

素因数の和:1565

約数の個数: 32

約数和(自身を含む): 45488520

約数和(自身を除く): 25333600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 461, 922, 1093, 1844, 2186, 2305, 3688, 4372, 4610, 5465, 8744, 9220, 10930, 18440, 21860, 43720, 503873, 1007746, 2015492, 2519365, 4030984, 5038730, 10077460, 20154920]

約数ペア:

[(1, 20154920), (2, 10077460), (4, 5038730), (5, 4030984), (8, 2519365), (10, 2015492), (20, 1007746), (40, 503873), (461, 43720), (922, 21860), (1093, 18440), (1844, 10930), (2186, 9220), (2305, 8744), (3688, 5465), (4372, 4610)]