291201220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{691}}^1\times {\mathrm{1109}}^1$

素因数の和:1828

約数の個数: 48

約数和(自身を含む): 645220800

約数和(自身を除く): 354019580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 691, 1109, 1382, 2218, 2764, 3455, 4436, 5545, 6910, 11090, 13129, 13820, 21071, 22180, 26258, 42142, 52516, 65645, 84284, 105355, 131290, 210710, 262580, 421420, 766319, 1532638, 3065276, 3831595, 7663190, 14560061, 15326380, 29120122, 58240244, 72800305, 145600610, 291201220]

約数ペア:

[(1, 291201220), (2, 145600610), (4, 72800305), (5, 58240244), (10, 29120122), (19, 15326380), (20, 14560061), (38, 7663190), (76, 3831595), (95, 3065276), (190, 1532638), (380, 766319), (691, 421420), (1109, 262580), (1382, 210710), (2218, 131290), (2764, 105355), (3455, 84284), (4436, 65645), (5545, 52516), (6910, 42142), (11090, 26258), (13129, 22180), (13820, 21071)]