638514910

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{30391}}^1$

素因数の和:30600

約数の個数: 32

約数和(自身を含む): 1260417024

約数和(自身を除く): 621902114

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 191, 382, 955, 1910, 2101, 4202, 10505, 21010, 30391, 60782, 151955, 303910, 334301, 668602, 1671505, 3343010, 5804681, 11609362, 29023405, 58046810, 63851491, 127702982, 319257455, 638514910]

約数ペア:

[(1, 638514910), (2, 319257455), (5, 127702982), (10, 63851491), (11, 58046810), (22, 29023405), (55, 11609362), (110, 5804681), (191, 3343010), (382, 1671505), (955, 668602), (1910, 334301), (2101, 303910), (4202, 151955), (10505, 60782), (21010, 30391)]