80661940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{1811}}^1$

素因数の和:1968

約数の個数: 48

約数和(自身を含む): 180823104

約数和(自身を除く): 100161164

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 131, 170, 262, 340, 524, 655, 1310, 1811, 2227, 2620, 3622, 4454, 7244, 8908, 9055, 11135, 18110, 22270, 30787, 36220, 44540, 61574, 123148, 153935, 237241, 307870, 474482, 615740, 948964, 1186205, 2372410, 4033097, 4744820, 8066194, 16132388, 20165485, 40330970, 80661940]

約数ペア:

[(1, 80661940), (2, 40330970), (4, 20165485), (5, 16132388), (10, 8066194), (17, 4744820), (20, 4033097), (34, 2372410), (68, 1186205), (85, 948964), (131, 615740), (170, 474482), (262, 307870), (340, 237241), (524, 153935), (655, 123148), (1310, 61574), (1811, 44540), (2227, 36220), (2620, 30787), (3622, 22270), (4454, 18110), (7244, 11135), (8908, 9055)]