218632360

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{8269}}^1$

素因数の和:8941

約数の個数: 32

約数和(自身を含む): 492726600

約数和(自身を除く): 274094240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 1322, 2644, 3305, 5288, 6610, 8269, 13220, 16538, 26440, 33076, 41345, 66152, 82690, 165380, 330760, 5465809, 10931618, 21863236, 27329045, 43726472, 54658090, 109316180, 218632360]

約数ペア:

[(1, 218632360), (2, 109316180), (4, 54658090), (5, 43726472), (8, 27329045), (10, 21863236), (20, 10931618), (40, 5465809), (661, 330760), (1322, 165380), (2644, 82690), (3305, 66152), (5288, 41345), (6610, 33076), (8269, 26440), (13220, 16538)]