21000618135

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{1103}}^1\times {\mathrm{60443}}^1$

素因数の和:61564

約数の個数: 48

約数和(自身を含む): 41639629824

約数和(自身を除く): 20639011689

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 1103, 3309, 5515, 7721, 9927, 16545, 23163, 38605, 49635, 60443, 69489, 115815, 181329, 302215, 347445, 423101, 543987, 906645, 1269303, 2115505, 2719935, 3807909, 6346515, 19039545, 66668629, 200005887, 333343145, 466680403, 600017661, 1000029435, 1400041209, 2333402015, 3000088305, 4200123627, 7000206045, 21000618135]

約数ペア:

[(1, 21000618135), (3, 7000206045), (5, 4200123627), (7, 3000088305), (9, 2333402015), (15, 1400041209), (21, 1000029435), (35, 600017661), (45, 466680403), (63, 333343145), (105, 200005887), (315, 66668629), (1103, 19039545), (3309, 6346515), (5515, 3807909), (7721, 2719935), (9927, 2115505), (16545, 1269303), (23163, 906645), (38605, 543987), (49635, 423101), (60443, 347445), (69489, 302215), (115815, 181329)]