21221019

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{3307}}^1$

素因数の和:3367

約数の個数: 24

約数和(自身を含む): 33027072

約数和(自身を除く): 11806053

約数列:

[1, 3, 9, 23, 31, 69, 93, 207, 279, 713, 2139, 3307, 6417, 9921, 29763, 76061, 102517, 228183, 307551, 684549, 922653, 2357891, 7073673, 21221019]

約数ペア:

[(1, 21221019), (3, 7073673), (9, 2357891), (23, 922653), (31, 684549), (69, 307551), (93, 228183), (207, 102517), (279, 76061), (713, 29763), (2139, 9921), (3307, 6417)]