21559041

素因数分解:

$3^4\times 7^1\times {\mathrm{47}}^1\times {\mathrm{809}}^1$

素因数の和:875

約数の個数: 40

約数和(自身を含む): 37635840

約数和(自身を除く): 16076799

約数列:

[1, 3, 7, 9, 21, 27, 47, 63, 81, 141, 189, 329, 423, 567, 809, 987, 1269, 2427, 2961, 3807, 5663, 7281, 8883, 16989, 21843, 26649, 38023, 50967, 65529, 114069, 152901, 266161, 342207, 458703, 798483, 1026621, 2395449, 3079863, 7186347, 21559041]

約数ペア:

[(1, 21559041), (3, 7186347), (7, 3079863), (9, 2395449), (21, 1026621), (27, 798483), (47, 458703), (63, 342207), (81, 266161), (141, 152901), (189, 114069), (329, 65529), (423, 50967), (567, 38023), (809, 26649), (987, 21843), (1269, 16989), (2427, 8883), (2961, 7281), (3807, 5663)]