221339447

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{10357}}^1$

素因数の和:10478

約数の個数: 16

約数和(自身を含む): 262513152

約数和(自身を除く): 41173705

約数列:

[1, 7, 43, 71, 301, 497, 3053, 10357, 21371, 72499, 445351, 735347, 3117457, 5147429, 31619921, 221339447]

約数ペア:

[(1, 221339447), (7, 31619921), (43, 5147429), (71, 3117457), (301, 735347), (497, 445351), (3053, 72499), (10357, 21371)]