144439280

素因数分解:

$2^4\times 5^1\times {\mathrm{1805491}}^1$

素因数の和:1805504

約数の個数: 20

約数和(自身を含む): 335821512

約数和(自身を除く): 191382232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1805491, 3610982, 7221964, 9027455, 14443928, 18054910, 28887856, 36109820, 72219640, 144439280]

約数ペア:

[(1, 144439280), (2, 72219640), (4, 36109820), (5, 28887856), (8, 18054910), (10, 14443928), (16, 9027455), (20, 7221964), (40, 3610982), (80, 1805491)]