661195390

素因数分解:

$2^1\times 5^1\times {\mathrm{4201}}^1\times {\mathrm{15739}}^1$

素因数の和:19947

約数の個数: 16

約数和(自身を含む): 1190510640

約数和(自身を除く): 529315250

約数列:

[1, 2, 5, 10, 4201, 8402, 15739, 21005, 31478, 42010, 78695, 157390, 66119539, 132239078, 330597695, 661195390]

約数ペア:

[(1, 661195390), (2, 330597695), (5, 132239078), (10, 66119539), (4201, 157390), (8402, 78695), (15739, 42010), (21005, 31478)]