27991775

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{97}}^2$

素因数の和:228

約数の個数: 36

約数和(自身を含む): 42439248

約数和(自身を除く): 14447473

約数列:

[1, 5, 7, 17, 25, 35, 85, 97, 119, 175, 425, 485, 595, 679, 1649, 2425, 2975, 3395, 8245, 9409, 11543, 16975, 41225, 47045, 57715, 65863, 159953, 235225, 288575, 329315, 799765, 1119671, 1646575, 3998825, 5598355, 27991775]

約数ペア:

[(1, 27991775), (5, 5598355), (7, 3998825), (17, 1646575), (25, 1119671), (35, 799765), (85, 329315), (97, 288575), (119, 235225), (175, 159953), (425, 65863), (485, 57715), (595, 47045), (679, 41225), (1649, 16975), (2425, 11543), (2975, 9409), (3395, 8245)]