8439220

素因数分解:

$2^2\times 5^1\times {\mathrm{509}}^1\times {\mathrm{829}}^1$

素因数の和:1347

約数の個数: 24

約数和(自身を含む): 17778600

約数和(自身を除く): 9339380

約数列:

[1, 2, 4, 5, 10, 20, 509, 829, 1018, 1658, 2036, 2545, 3316, 4145, 5090, 8290, 10180, 16580, 421961, 843922, 1687844, 2109805, 4219610, 8439220]

約数ペア:

[(1, 8439220), (2, 4219610), (4, 2109805), (5, 1687844), (10, 843922), (20, 421961), (509, 16580), (829, 10180), (1018, 8290), (1658, 5090), (2036, 4145), (2545, 3316)]