21001155

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{28573}}^1$

素因数の和:28595

約数の個数: 24

約数和(自身を含む): 39089232

約数和(自身を除く): 18088077

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 28573, 85719, 142865, 200011, 428595, 600033, 1000055, 1400077, 3000165, 4200231, 7000385, 21001155]

約数ペア:

[(1, 21001155), (3, 7000385), (5, 4200231), (7, 3000165), (15, 1400077), (21, 1000055), (35, 600033), (49, 428595), (105, 200011), (147, 142865), (245, 85719), (735, 28573)]