15998008

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{773}}^1$

素因数の和:991

約数の個数: 32

約数和(自身を含む): 32508000

約数和(自身を除く): 16509992

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 199, 398, 773, 796, 1546, 1592, 2587, 3092, 5174, 6184, 10049, 10348, 20098, 20696, 40196, 80392, 153827, 307654, 615308, 1230616, 1999751, 3999502, 7999004, 15998008]

約数ペア:

[(1, 15998008), (2, 7999004), (4, 3999502), (8, 1999751), (13, 1230616), (26, 615308), (52, 307654), (104, 153827), (199, 80392), (398, 40196), (773, 20696), (796, 20098), (1546, 10348), (1592, 10049), (2587, 6184), (3092, 5174)]