21008784

素因数分解:

$2^4\times 3^1\times {\mathrm{439}}^1\times {\mathrm{997}}^1$

素因数の和:1447

約数の個数: 40

約数和(自身を含む): 54450880

約数和(自身を除く): 33442096

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 439, 878, 997, 1317, 1756, 1994, 2634, 2991, 3512, 3988, 5268, 5982, 7024, 7976, 10536, 11964, 15952, 21072, 23928, 47856, 437683, 875366, 1313049, 1750732, 2626098, 3501464, 5252196, 7002928, 10504392, 21008784]

約数ペア:

[(1, 21008784), (2, 10504392), (3, 7002928), (4, 5252196), (6, 3501464), (8, 2626098), (12, 1750732), (16, 1313049), (24, 875366), (48, 437683), (439, 47856), (878, 23928), (997, 21072), (1317, 15952), (1756, 11964), (1994, 10536), (2634, 7976), (2991, 7024), (3512, 5982), (3988, 5268)]