21801668

素因数分解:

$2^2\times 7^2\times {\mathrm{41}}^1\times {\mathrm{2713}}^1$

素因数の和:2772

約数の個数: 36

約数和(自身を含む): 45481212

約数和(自身を除く): 23679544

約数列:

[1, 2, 4, 7, 14, 28, 41, 49, 82, 98, 164, 196, 287, 574, 1148, 2009, 2713, 4018, 5426, 8036, 10852, 18991, 37982, 75964, 111233, 132937, 222466, 265874, 444932, 531748, 778631, 1557262, 3114524, 5450417, 10900834, 21801668]

約数ペア:

[(1, 21801668), (2, 10900834), (4, 5450417), (7, 3114524), (14, 1557262), (28, 778631), (41, 531748), (49, 444932), (82, 265874), (98, 222466), (164, 132937), (196, 111233), (287, 75964), (574, 37982), (1148, 18991), (2009, 10852), (2713, 8036), (4018, 5426)]