408194975

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{71}}^2\times {\mathrm{79}}^1$

素因数の和:272

約数の個数: 36

約数和(自身を含む): 532570080

約数和(自身を除く): 124375105

約数列:

[1, 5, 25, 41, 71, 79, 205, 355, 395, 1025, 1775, 1975, 2911, 3239, 5041, 5609, 14555, 16195, 25205, 28045, 72775, 80975, 126025, 140225, 206681, 229969, 398239, 1033405, 1149845, 1991195, 5167025, 5749225, 9955975, 16327799, 81638995, 408194975]

約数ペア:

[(1, 408194975), (5, 81638995), (25, 16327799), (41, 9955975), (71, 5749225), (79, 5167025), (205, 1991195), (355, 1149845), (395, 1033405), (1025, 398239), (1775, 229969), (1975, 206681), (2911, 140225), (3239, 126025), (5041, 80975), (5609, 72775), (14555, 28045), (16195, 25205)]