64892980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{389}}^1\times {\mathrm{439}}^1$

素因数の和:856

約数の個数: 48

約数和(自身を含む): 144144000

約数和(自身を除く): 79251020

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 389, 439, 778, 878, 1556, 1756, 1945, 2195, 3890, 4390, 7391, 7780, 8341, 8780, 14782, 16682, 29564, 33364, 36955, 41705, 73910, 83410, 147820, 166820, 170771, 341542, 683084, 853855, 1707710, 3244649, 3415420, 6489298, 12978596, 16223245, 32446490, 64892980]

約数ペア:

[(1, 64892980), (2, 32446490), (4, 16223245), (5, 12978596), (10, 6489298), (19, 3415420), (20, 3244649), (38, 1707710), (76, 853855), (95, 683084), (190, 341542), (380, 170771), (389, 166820), (439, 147820), (778, 83410), (878, 73910), (1556, 41705), (1756, 36955), (1945, 33364), (2195, 29564), (3890, 16682), (4390, 14782), (7391, 8780), (7780, 8341)]