21984795

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{983}}^1$

素因数の和:1072

約数の個数: 48

約数和(自身を含む): 44209152

約数和(自身を除く): 22224357

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 71, 105, 213, 315, 355, 497, 639, 983, 1065, 1491, 2485, 2949, 3195, 4473, 4915, 6881, 7455, 8847, 14745, 20643, 22365, 34405, 44235, 61929, 69793, 103215, 209379, 309645, 348965, 488551, 628137, 1046895, 1465653, 2442755, 3140685, 4396959, 7328265, 21984795]

約数ペア:

[(1, 21984795), (3, 7328265), (5, 4396959), (7, 3140685), (9, 2442755), (15, 1465653), (21, 1046895), (35, 628137), (45, 488551), (63, 348965), (71, 309645), (105, 209379), (213, 103215), (315, 69793), (355, 61929), (497, 44235), (639, 34405), (983, 22365), (1065, 20643), (1491, 14745), (2485, 8847), (2949, 7455), (3195, 6881), (4473, 4915)]