77490520

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{21767}}^1$

素因数の和:21867

約数の個数: 32

約数和(自身を含む): 176320800

約数和(自身を除く): 98830280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 21767, 43534, 87068, 108835, 174136, 217670, 435340, 870680, 1937263, 3874526, 7749052, 9686315, 15498104, 19372630, 38745260, 77490520]

約数ペア:

[(1, 77490520), (2, 38745260), (4, 19372630), (5, 15498104), (8, 9686315), (10, 7749052), (20, 3874526), (40, 1937263), (89, 870680), (178, 435340), (356, 217670), (445, 174136), (712, 108835), (890, 87068), (1780, 43534), (3560, 21767)]