12973975

素因数分解:

$5^2\times 7^3\times {\mathrm{17}}^1\times {\mathrm{89}}^1$

素因数の和:137

約数の個数: 48

約数和(自身を含む): 20088000

約数和(自身を除く): 7114025

約数列:

[1, 5, 7, 17, 25, 35, 49, 85, 89, 119, 175, 245, 343, 425, 445, 595, 623, 833, 1225, 1513, 1715, 2225, 2975, 3115, 4165, 4361, 5831, 7565, 8575, 10591, 15575, 20825, 21805, 29155, 30527, 37825, 52955, 74137, 109025, 145775, 152635, 264775, 370685, 518959, 763175, 1853425, 2594795, 12973975]

約数ペア:

[(1, 12973975), (5, 2594795), (7, 1853425), (17, 763175), (25, 518959), (35, 370685), (49, 264775), (85, 152635), (89, 145775), (119, 109025), (175, 74137), (245, 52955), (343, 37825), (425, 30527), (445, 29155), (595, 21805), (623, 20825), (833, 15575), (1225, 10591), (1513, 8575), (1715, 7565), (2225, 5831), (2975, 4361), (3115, 4165)]