12612440

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4441}}^1$

素因数の和:4523

約数の個数: 32

約数和(自身を含む): 28784160

約数和(自身を除く): 16171720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 4441, 8882, 17764, 22205, 35528, 44410, 88820, 177640, 315311, 630622, 1261244, 1576555, 2522488, 3153110, 6306220, 12612440]

約数ペア:

[(1, 12612440), (2, 6306220), (4, 3153110), (5, 2522488), (8, 1576555), (10, 1261244), (20, 630622), (40, 315311), (71, 177640), (142, 88820), (284, 44410), (355, 35528), (568, 22205), (710, 17764), (1420, 8882), (2840, 4441)]