64198760

素因数分解:

$2^3\times 5^1\times {\mathrm{811}}^1\times {\mathrm{1979}}^1$

素因数の和:2801

約数の個数: 32

約数和(自身を含む): 144698400

約数和(自身を除く): 80499640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 811, 1622, 1979, 3244, 3958, 4055, 6488, 7916, 8110, 9895, 15832, 16220, 19790, 32440, 39580, 79160, 1604969, 3209938, 6419876, 8024845, 12839752, 16049690, 32099380, 64198760]

約数ペア:

[(1, 64198760), (2, 32099380), (4, 16049690), (5, 12839752), (8, 8024845), (10, 6419876), (20, 3209938), (40, 1604969), (811, 79160), (1622, 39580), (1979, 32440), (3244, 19790), (3958, 16220), (4055, 15832), (6488, 9895), (7916, 8110)]