20328070

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{1949}}^1$

素因数の和:2112

約数の個数: 32

約数和(自身を含む): 42120000

約数和(自身を除く): 21791930

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 149, 298, 745, 1043, 1490, 1949, 2086, 3898, 5215, 9745, 10430, 13643, 19490, 27286, 68215, 136430, 290401, 580802, 1452005, 2032807, 2904010, 4065614, 10164035, 20328070]

約数ペア:

[(1, 20328070), (2, 10164035), (5, 4065614), (7, 2904010), (10, 2032807), (14, 1452005), (35, 580802), (70, 290401), (149, 136430), (298, 68215), (745, 27286), (1043, 19490), (1490, 13643), (1949, 10430), (2086, 9745), (3898, 5215)]