81802790

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{10501}}^1$

素因数の和:10568

約数の個数: 32

約数和(自身を含む): 158790240

約数和(自身を除く): 76987450

約数列:

[1, 2, 5, 10, 19, 38, 41, 82, 95, 190, 205, 410, 779, 1558, 3895, 7790, 10501, 21002, 52505, 105010, 199519, 399038, 430541, 861082, 997595, 1995190, 2152705, 4305410, 8180279, 16360558, 40901395, 81802790]

約数ペア:

[(1, 81802790), (2, 40901395), (5, 16360558), (10, 8180279), (19, 4305410), (38, 2152705), (41, 1995190), (82, 997595), (95, 861082), (190, 430541), (205, 399038), (410, 199519), (779, 105010), (1558, 52505), (3895, 21002), (7790, 10501)]