1279420760

素因数分解:

$2^3\times 5^1\times {\mathrm{4271}}^1\times {\mathrm{7489}}^1$

素因数の和:11771

約数の個数: 32

約数和(自身を含む): 2879755200

約数和(自身を除く): 1600334440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4271, 7489, 8542, 14978, 17084, 21355, 29956, 34168, 37445, 42710, 59912, 74890, 85420, 149780, 170840, 299560, 31985519, 63971038, 127942076, 159927595, 255884152, 319855190, 639710380, 1279420760]

約数ペア:

[(1, 1279420760), (2, 639710380), (4, 319855190), (5, 255884152), (8, 159927595), (10, 127942076), (20, 63971038), (40, 31985519), (4271, 299560), (7489, 170840), (8542, 149780), (14978, 85420), (17084, 74890), (21355, 59912), (29956, 42710), (34168, 37445)]