20638968

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2857}}^1$

素因数の和:2916

約数の個数: 64

約数和(自身を含む): 60360960

約数和(自身を除く): 39721992

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 43, 56, 84, 86, 129, 168, 172, 258, 301, 344, 516, 602, 903, 1032, 1204, 1806, 2408, 2857, 3612, 5714, 7224, 8571, 11428, 17142, 19999, 22856, 34284, 39998, 59997, 68568, 79996, 119994, 122851, 159992, 239988, 245702, 368553, 479976, 491404, 737106, 859957, 982808, 1474212, 1719914, 2579871, 2948424, 3439828, 5159742, 6879656, 10319484, 20638968]

約数ペア:

[(1, 20638968), (2, 10319484), (3, 6879656), (4, 5159742), (6, 3439828), (7, 2948424), (8, 2579871), (12, 1719914), (14, 1474212), (21, 982808), (24, 859957), (28, 737106), (42, 491404), (43, 479976), (56, 368553), (84, 245702), (86, 239988), (129, 159992), (168, 122851), (172, 119994), (258, 79996), (301, 68568), (344, 59997), (516, 39998), (602, 34284), (903, 22856), (1032, 19999), (1204, 17142), (1806, 11428), (2408, 8571), (2857, 7224), (3612, 5714)]