21868730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{1129}}^1$

素因数の和:1298

約数の個数: 32

約数和(自身を含む): 42714000

約数和(自身を除く): 20845270

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 149, 298, 745, 1129, 1490, 1937, 2258, 3874, 5645, 9685, 11290, 14677, 19370, 29354, 73385, 146770, 168221, 336442, 841105, 1682210, 2186873, 4373746, 10934365, 21868730]

約数ペア:

[(1, 21868730), (2, 10934365), (5, 4373746), (10, 2186873), (13, 1682210), (26, 841105), (65, 336442), (130, 168221), (149, 146770), (298, 73385), (745, 29354), (1129, 19370), (1490, 14677), (1937, 11290), (2258, 9685), (3874, 5645)]