16376980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 35703360

約数和(自身を除く): 19326380

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 137, 139, 172, 215, 274, 278, 430, 548, 556, 685, 695, 860, 1370, 1390, 2740, 2780, 5891, 5977, 11782, 11954, 19043, 23564, 23908, 29455, 29885, 38086, 58910, 59770, 76172, 95215, 117820, 119540, 190430, 380860, 818849, 1637698, 3275396, 4094245, 8188490, 16376980]

約数ペア:

[(1, 16376980), (2, 8188490), (4, 4094245), (5, 3275396), (10, 1637698), (20, 818849), (43, 380860), (86, 190430), (137, 119540), (139, 117820), (172, 95215), (215, 76172), (274, 59770), (278, 58910), (430, 38086), (548, 29885), (556, 29455), (685, 23908), (695, 23564), (860, 19043), (1370, 11954), (1390, 11782), (2740, 5977), (2780, 5891)]