21708840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{180907}}^1$

素因数の和:180921

約数の個数: 32

約数和(自身を含む): 65126880

約数和(自身を除く): 43418040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 180907, 361814, 542721, 723628, 904535, 1085442, 1447256, 1809070, 2170884, 2713605, 3618140, 4341768, 5427210, 7236280, 10854420, 21708840]

約数ペア:

[(1, 21708840), (2, 10854420), (3, 7236280), (4, 5427210), (5, 4341768), (6, 3618140), (8, 2713605), (10, 2170884), (12, 1809070), (15, 1447256), (20, 1085442), (24, 904535), (30, 723628), (40, 542721), (60, 361814), (120, 180907)]