19972140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{367}}^1\times {\mathrm{907}}^1$

素因数の和:1286

約数の個数: 48

約数和(自身を含む): 56136192

約数和(自身を除く): 36164052

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 367, 734, 907, 1101, 1468, 1814, 1835, 2202, 2721, 3628, 3670, 4404, 4535, 5442, 5505, 7340, 9070, 10884, 11010, 13605, 18140, 22020, 27210, 54420, 332869, 665738, 998607, 1331476, 1664345, 1997214, 3328690, 3994428, 4993035, 6657380, 9986070, 19972140]

約数ペア:

[(1, 19972140), (2, 9986070), (3, 6657380), (4, 4993035), (5, 3994428), (6, 3328690), (10, 1997214), (12, 1664345), (15, 1331476), (20, 998607), (30, 665738), (60, 332869), (367, 54420), (734, 27210), (907, 22020), (1101, 18140), (1468, 13605), (1814, 11010), (1835, 10884), (2202, 9070), (2721, 7340), (3628, 5505), (3670, 5442), (4404, 4535)]