20813670

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{823}}^1$

素因数の和:1117

約数の個数: 48

約数和(自身を含む): 54374112

約数和(自身を除く): 33560442

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 281, 562, 823, 843, 1405, 1646, 1686, 2469, 2529, 2810, 4115, 4215, 4938, 5058, 7407, 8230, 8430, 12345, 12645, 14814, 24690, 25290, 37035, 74070, 231263, 462526, 693789, 1156315, 1387578, 2081367, 2312630, 3468945, 4162734, 6937890, 10406835, 20813670]

約数ペア:

[(1, 20813670), (2, 10406835), (3, 6937890), (5, 4162734), (6, 3468945), (9, 2312630), (10, 2081367), (15, 1387578), (18, 1156315), (30, 693789), (45, 462526), (90, 231263), (281, 74070), (562, 37035), (823, 25290), (843, 24690), (1405, 14814), (1646, 12645), (1686, 12345), (2469, 8430), (2529, 8230), (2810, 7407), (4115, 5058), (4215, 4938)]