639837653

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{193}}^1\times {\mathrm{2143}}^1$

素因数の和:2373

約数の個数: 32

約数和(自身を含む): 838526976

約数和(自身を除く): 198689323

約数列:

[1, 7, 13, 17, 91, 119, 193, 221, 1351, 1547, 2143, 2509, 3281, 15001, 17563, 22967, 27859, 36431, 42653, 195013, 255017, 298571, 413599, 473603, 2895193, 3315221, 5376787, 7031183, 37637509, 49218281, 91405379, 639837653]

約数ペア:

[(1, 639837653), (7, 91405379), (13, 49218281), (17, 37637509), (91, 7031183), (119, 5376787), (193, 3315221), (221, 2895193), (1351, 473603), (1547, 413599), (2143, 298571), (2509, 255017), (3281, 195013), (15001, 42653), (17563, 36431), (22967, 27859)]