20278240

素因数分解:

$2^5\times 5^1\times {\mathrm{126739}}^1$

素因数の和:126754

約数の個数: 24

約数和(自身を含む): 47907720

約数和(自身を除く): 27629480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 126739, 253478, 506956, 633695, 1013912, 1267390, 2027824, 2534780, 4055648, 5069560, 10139120, 20278240]

約数ペア:

[(1, 20278240), (2, 10139120), (4, 5069560), (5, 4055648), (8, 2534780), (10, 2027824), (16, 1267390), (20, 1013912), (32, 633695), (40, 506956), (80, 253478), (160, 126739)]