918798340

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{349}}^1\times {\mathrm{947}}^1$

素因数の和:1444

約数の個数: 48

約数和(自身を含む): 1950984000

約数和(自身を除く): 1032185660

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 349, 556, 695, 698, 947, 1390, 1396, 1745, 1894, 2780, 3490, 3788, 4735, 6980, 9470, 18940, 48511, 97022, 131633, 194044, 242555, 263266, 330503, 485110, 526532, 658165, 661006, 970220, 1316330, 1322012, 1652515, 2632660, 3305030, 6610060, 45939917, 91879834, 183759668, 229699585, 459399170, 918798340]

約数ペア:

[(1, 918798340), (2, 459399170), (4, 229699585), (5, 183759668), (10, 91879834), (20, 45939917), (139, 6610060), (278, 3305030), (349, 2632660), (556, 1652515), (695, 1322012), (698, 1316330), (947, 970220), (1390, 661006), (1396, 658165), (1745, 526532), (1894, 485110), (2780, 330503), (3490, 263266), (3788, 242555), (4735, 194044), (6980, 131633), (9470, 97022), (18940, 48511)]