21878115

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{2063}}^1$

素因数の和:2179

約数の個数: 32

約数和(自身を含む): 40421376

約数和(自身を除く): 18543261

約数列:

[1, 3, 5, 7, 15, 21, 35, 101, 105, 303, 505, 707, 1515, 2063, 2121, 3535, 6189, 10315, 10605, 14441, 30945, 43323, 72205, 208363, 216615, 625089, 1041815, 1458541, 3125445, 4375623, 7292705, 21878115]

約数ペア:

[(1, 21878115), (3, 7292705), (5, 4375623), (7, 3125445), (15, 1458541), (21, 1041815), (35, 625089), (101, 216615), (105, 208363), (303, 72205), (505, 43323), (707, 30945), (1515, 14441), (2063, 10605), (2121, 10315), (3535, 6189)]