661714160

素因数分解:

$2^4\times 5^1\times {\mathrm{401}}^1\times {\mathrm{20627}}^1$

素因数の和:21041

約数の個数: 40

約数和(自身を含む): 1542396816

約数和(自身を除く): 880682656

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 401, 802, 1604, 2005, 3208, 4010, 6416, 8020, 16040, 20627, 32080, 41254, 82508, 103135, 165016, 206270, 330032, 412540, 825080, 1650160, 8271427, 16542854, 33085708, 41357135, 66171416, 82714270, 132342832, 165428540, 330857080, 661714160]

約数ペア:

[(1, 661714160), (2, 330857080), (4, 165428540), (5, 132342832), (8, 82714270), (10, 66171416), (16, 41357135), (20, 33085708), (40, 16542854), (80, 8271427), (401, 1650160), (802, 825080), (1604, 412540), (2005, 330032), (3208, 206270), (4010, 165016), (6416, 103135), (8020, 82508), (16040, 41254), (20627, 32080)]