66781240

素因数分解:

$2^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{8741}}^1$

素因数の和:8943

約数の個数: 32

約数和(自身を含む): 151061760

約数和(自身を除く): 84280520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 191, 382, 764, 955, 1528, 1910, 3820, 7640, 8741, 17482, 34964, 43705, 69928, 87410, 174820, 349640, 1669531, 3339062, 6678124, 8347655, 13356248, 16695310, 33390620, 66781240]

約数ペア:

[(1, 66781240), (2, 33390620), (4, 16695310), (5, 13356248), (8, 8347655), (10, 6678124), (20, 3339062), (40, 1669531), (191, 349640), (382, 174820), (764, 87410), (955, 69928), (1528, 43705), (1910, 34964), (3820, 17482), (7640, 8741)]