129640520

素因数分解:

$2^3\times 5^1\times {\mathrm{827}}^1\times {\mathrm{3919}}^1$

素因数の和:4757

約数の個数: 32

約数和(自身を含む): 292118400

約数和(自身を除く): 162477880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 827, 1654, 3308, 3919, 4135, 6616, 7838, 8270, 15676, 16540, 19595, 31352, 33080, 39190, 78380, 156760, 3241013, 6482026, 12964052, 16205065, 25928104, 32410130, 64820260, 129640520]

約数ペア:

[(1, 129640520), (2, 64820260), (4, 32410130), (5, 25928104), (8, 16205065), (10, 12964052), (20, 6482026), (40, 3241013), (827, 156760), (1654, 78380), (3308, 39190), (3919, 33080), (4135, 31352), (6616, 19595), (7838, 16540), (8270, 15676)]