21109956

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{5347}}^1$

素因数の和:5408

約数の個数: 48

約数和(自身を含む): 57501696

約数和(自身を除く): 36391740

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 47, 84, 94, 141, 188, 282, 329, 564, 658, 987, 1316, 1974, 3948, 5347, 10694, 16041, 21388, 32082, 37429, 64164, 74858, 112287, 149716, 224574, 251309, 449148, 502618, 753927, 1005236, 1507854, 1759163, 3015708, 3518326, 5277489, 7036652, 10554978, 21109956]

約数ペア:

[(1, 21109956), (2, 10554978), (3, 7036652), (4, 5277489), (6, 3518326), (7, 3015708), (12, 1759163), (14, 1507854), (21, 1005236), (28, 753927), (42, 502618), (47, 449148), (84, 251309), (94, 224574), (141, 149716), (188, 112287), (282, 74858), (329, 64164), (564, 37429), (658, 32082), (987, 21388), (1316, 16041), (1974, 10694), (3948, 5347)]