80491220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{1109}}^1$

素因数の和:1328

約数の個数: 48

約数和(自身を含む): 179020800

約数和(自身を除く): 98529580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 191, 380, 382, 764, 955, 1109, 1910, 2218, 3629, 3820, 4436, 5545, 7258, 11090, 14516, 18145, 21071, 22180, 36290, 42142, 72580, 84284, 105355, 210710, 211819, 421420, 423638, 847276, 1059095, 2118190, 4024561, 4236380, 8049122, 16098244, 20122805, 40245610, 80491220]

約数ペア:

[(1, 80491220), (2, 40245610), (4, 20122805), (5, 16098244), (10, 8049122), (19, 4236380), (20, 4024561), (38, 2118190), (76, 1059095), (95, 847276), (190, 423638), (191, 421420), (380, 211819), (382, 210710), (764, 105355), (955, 84284), (1109, 72580), (1910, 42142), (2218, 36290), (3629, 22180), (3820, 21071), (4436, 18145), (5545, 14516), (7258, 11090)]