165099380

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{21221}}^1$

素因数の和:21619

約数の個数: 24

約数和(自身を含む): 347616360

約数和(自身を除く): 182516980

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 3890, 7780, 21221, 42442, 84884, 106105, 212210, 424420, 8254969, 16509938, 33019876, 41274845, 82549690, 165099380]

約数ペア:

[(1, 165099380), (2, 82549690), (4, 41274845), (5, 33019876), (10, 16509938), (20, 8254969), (389, 424420), (778, 212210), (1556, 106105), (1945, 84884), (3890, 42442), (7780, 21221)]