1990380095

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{409}}^1\times {\mathrm{3847}}^1$

素因数の和:4295

約数の個数: 32

約数和(自身を含む): 2726231040

約数和(自身を除く): 735850945

約数列:

[1, 5, 11, 23, 55, 115, 253, 409, 1265, 2045, 3847, 4499, 9407, 19235, 22495, 42317, 47035, 88481, 103477, 211585, 442405, 517385, 973291, 1573423, 4866455, 7867115, 17307653, 36188729, 86538265, 180943645, 398076019, 1990380095]

約数ペア:

[(1, 1990380095), (5, 398076019), (11, 180943645), (23, 86538265), (55, 36188729), (115, 17307653), (253, 7867115), (409, 4866455), (1265, 1573423), (2045, 973291), (3847, 517385), (4499, 442405), (9407, 211585), (19235, 103477), (22495, 88481), (42317, 47035)]