1980996880

素因数分解:

$2^4\times 5^1\times {\mathrm{24762461}}^1$

素因数の和:24762474

約数の個数: 20

約数和(自身を含む): 4605817932

約数和(自身を除く): 2624821052

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 24762461, 49524922, 99049844, 123812305, 198099688, 247624610, 396199376, 495249220, 990498440, 1980996880]

約数ペア:

[(1, 1980996880), (2, 990498440), (4, 495249220), (5, 396199376), (8, 247624610), (10, 198099688), (16, 123812305), (20, 99049844), (40, 49524922), (80, 24762461)]