21113800

素因数分解:

$2^3\times 5^2\times {\mathrm{229}}^1\times {\mathrm{461}}^1$

素因数の和:706

約数の個数: 48

約数和(自身を含む): 49410900

約数和(自身を除く): 28297100

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 229, 458, 461, 916, 922, 1145, 1832, 1844, 2290, 2305, 3688, 4580, 4610, 5725, 9160, 9220, 11450, 11525, 18440, 22900, 23050, 45800, 46100, 92200, 105569, 211138, 422276, 527845, 844552, 1055690, 2111380, 2639225, 4222760, 5278450, 10556900, 21113800]

約数ペア:

[(1, 21113800), (2, 10556900), (4, 5278450), (5, 4222760), (8, 2639225), (10, 2111380), (20, 1055690), (25, 844552), (40, 527845), (50, 422276), (100, 211138), (200, 105569), (229, 92200), (458, 46100), (461, 45800), (916, 23050), (922, 22900), (1145, 18440), (1832, 11525), (1844, 11450), (2290, 9220), (2305, 9160), (3688, 5725), (4580, 4610)]