20975080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{3257}}^1$

素因数の和:3298

約数の個数: 64

約数和(自身を含む): 56298240

約数和(自身を除く): 35323160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3220, 3257, 6440, 6514, 13028, 16285, 22799, 26056, 32570, 45598, 65140, 74911, 91196, 113995, 130280, 149822, 182392, 227990, 299644, 374555, 455980, 524377, 599288, 749110, 911960, 1048754, 1498220, 2097508, 2621885, 2996440, 4195016, 5243770, 10487540, 20975080]

約数ペア:

[(1, 20975080), (2, 10487540), (4, 5243770), (5, 4195016), (7, 2996440), (8, 2621885), (10, 2097508), (14, 1498220), (20, 1048754), (23, 911960), (28, 749110), (35, 599288), (40, 524377), (46, 455980), (56, 374555), (70, 299644), (92, 227990), (115, 182392), (140, 149822), (161, 130280), (184, 113995), (230, 91196), (280, 74911), (322, 65140), (460, 45598), (644, 32570), (805, 26056), (920, 22799), (1288, 16285), (1610, 13028), (3220, 6514), (3257, 6440)]