21845425

素因数分解:

$5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1049}}^1$

素因数の和:1090

約数の個数: 36

約数和(自身を含む): 33396300

約数和(自身を除く): 11550875

約数列:

[1, 5, 7, 17, 25, 35, 49, 85, 119, 175, 245, 425, 595, 833, 1049, 1225, 2975, 4165, 5245, 7343, 17833, 20825, 26225, 36715, 51401, 89165, 124831, 183575, 257005, 445825, 624155, 873817, 1285025, 3120775, 4369085, 21845425]

約数ペア:

[(1, 21845425), (5, 4369085), (7, 3120775), (17, 1285025), (25, 873817), (35, 624155), (49, 445825), (85, 257005), (119, 183575), (175, 124831), (245, 89165), (425, 51401), (595, 36715), (833, 26225), (1049, 20825), (1225, 17833), (2975, 7343), (4165, 5245)]