121013780

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{191}}^1\times {\mathrm{401}}^1$

素因数の和:680

約数の個数: 48

約数和(自身を含む): 259338240

約数和(自身を除く): 138324460

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 191, 316, 382, 395, 401, 764, 790, 802, 955, 1580, 1604, 1910, 2005, 3820, 4010, 8020, 15089, 30178, 31679, 60356, 63358, 75445, 76591, 126716, 150890, 153182, 158395, 301780, 306364, 316790, 382955, 633580, 765910, 1531820, 6050689, 12101378, 24202756, 30253445, 60506890, 121013780]

約数ペア:

[(1, 121013780), (2, 60506890), (4, 30253445), (5, 24202756), (10, 12101378), (20, 6050689), (79, 1531820), (158, 765910), (191, 633580), (316, 382955), (382, 316790), (395, 306364), (401, 301780), (764, 158395), (790, 153182), (802, 150890), (955, 126716), (1580, 76591), (1604, 75445), (1910, 63358), (2005, 60356), (3820, 31679), (4010, 30178), (8020, 15089)]