156989380

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1\times {\mathrm{379}}^1$

素因数の和:676

約数の個数: 48

約数和(自身を含む): 335160000

約数和(自身を除く): 178170620

約数列:

[1, 2, 4, 5, 10, 20, 139, 149, 278, 298, 379, 556, 596, 695, 745, 758, 1390, 1490, 1516, 1895, 2780, 2980, 3790, 7580, 20711, 41422, 52681, 56471, 82844, 103555, 105362, 112942, 207110, 210724, 225884, 263405, 282355, 414220, 526810, 564710, 1053620, 1129420, 7849469, 15698938, 31397876, 39247345, 78494690, 156989380]

約数ペア:

[(1, 156989380), (2, 78494690), (4, 39247345), (5, 31397876), (10, 15698938), (20, 7849469), (139, 1129420), (149, 1053620), (278, 564710), (298, 526810), (379, 414220), (556, 282355), (596, 263405), (695, 225884), (745, 210724), (758, 207110), (1390, 112942), (1490, 105362), (1516, 103555), (1895, 82844), (2780, 56471), (2980, 52681), (3790, 41422), (7580, 20711)]