66720020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{9241}}^1$

素因数の和:9288

約数の個数: 36

約数和(自身を含む): 147890484

約数和(自身を除く): 81170464

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 3610, 7220, 9241, 18482, 36964, 46205, 92410, 175579, 184820, 351158, 702316, 877895, 1755790, 3336001, 3511580, 6672002, 13344004, 16680005, 33360010, 66720020]

約数ペア:

[(1, 66720020), (2, 33360010), (4, 16680005), (5, 13344004), (10, 6672002), (19, 3511580), (20, 3336001), (38, 1755790), (76, 877895), (95, 702316), (190, 351158), (361, 184820), (380, 175579), (722, 92410), (1444, 46205), (1805, 36964), (3610, 18482), (7220, 9241)]