221043291

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{284483}}^1$

素因数の和:284530

約数の個数: 16

約数和(自身を含む): 345932544

約数和(自身を除く): 124889253

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 284483, 853449, 1991381, 5974143, 10525871, 31577613, 73681097, 221043291]

約数ペア:

[(1, 221043291), (3, 73681097), (7, 31577613), (21, 10525871), (37, 5974143), (111, 1991381), (259, 853449), (777, 284483)]