77930980

素因数分解:

$2^2\times 5^1\times {\mathrm{691}}^1\times {\mathrm{5639}}^1$

素因数の和:6339

約数の個数: 24

約数和(自身を含む): 163920960

約数和(自身を除く): 85989980

約数列:

[1, 2, 4, 5, 10, 20, 691, 1382, 2764, 3455, 5639, 6910, 11278, 13820, 22556, 28195, 56390, 112780, 3896549, 7793098, 15586196, 19482745, 38965490, 77930980]

約数ペア:

[(1, 77930980), (2, 38965490), (4, 19482745), (5, 15586196), (10, 7793098), (20, 3896549), (691, 112780), (1382, 56390), (2764, 28195), (3455, 22556), (5639, 13820), (6910, 11278)]