26868980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{199}}^1$

素因数の和:408

約数の個数: 48

約数和(自身を含む): 58396800

約数和(自身を除く): 31527820

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 157, 172, 199, 215, 314, 398, 430, 628, 785, 796, 860, 995, 1570, 1990, 3140, 3980, 6751, 8557, 13502, 17114, 27004, 31243, 33755, 34228, 42785, 62486, 67510, 85570, 124972, 135020, 156215, 171140, 312430, 624860, 1343449, 2686898, 5373796, 6717245, 13434490, 26868980]

約数ペア:

[(1, 26868980), (2, 13434490), (4, 6717245), (5, 5373796), (10, 2686898), (20, 1343449), (43, 624860), (86, 312430), (157, 171140), (172, 156215), (199, 135020), (215, 124972), (314, 85570), (398, 67510), (430, 62486), (628, 42785), (785, 34228), (796, 33755), (860, 31243), (995, 27004), (1570, 17114), (1990, 13502), (3140, 8557), (3980, 6751)]