8123180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{199}}^1$

素因数の和:378

約数の個数: 48

約数和(自身を含む): 18580800

約数和(自身を除く): 10457620

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 157, 199, 260, 314, 398, 628, 785, 796, 995, 1570, 1990, 2041, 2587, 3140, 3980, 4082, 5174, 8164, 10205, 10348, 12935, 20410, 25870, 31243, 40820, 51740, 62486, 124972, 156215, 312430, 406159, 624860, 812318, 1624636, 2030795, 4061590, 8123180]

約数ペア:

[(1, 8123180), (2, 4061590), (4, 2030795), (5, 1624636), (10, 812318), (13, 624860), (20, 406159), (26, 312430), (52, 156215), (65, 124972), (130, 62486), (157, 51740), (199, 40820), (260, 31243), (314, 25870), (398, 20410), (628, 12935), (785, 10348), (796, 10205), (995, 8164), (1570, 5174), (1990, 4082), (2041, 3980), (2587, 3140)]