19992478925

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{15077}}^1$

素因数の和:15206

約数の個数: 48

約数和(自身を含む): 26923276800

約数和(自身を除く): 6930797875

約数列:

[1, 5, 25, 29, 31, 59, 145, 155, 295, 725, 775, 899, 1475, 1711, 1829, 4495, 8555, 9145, 15077, 22475, 42775, 45725, 53041, 75385, 265205, 376925, 437233, 467387, 889543, 1326025, 2186165, 2336935, 4447715, 10930825, 11684675, 13554223, 22238575, 25796747, 27575833, 67771115, 128983735, 137879165, 338855575, 644918675, 689395825, 799699157, 3998495785, 19992478925]

約数ペア:

[(1, 19992478925), (5, 3998495785), (25, 799699157), (29, 689395825), (31, 644918675), (59, 338855575), (145, 137879165), (155, 128983735), (295, 67771115), (725, 27575833), (775, 25796747), (899, 22238575), (1475, 13554223), (1711, 11684675), (1829, 10930825), (4495, 4447715), (8555, 2336935), (9145, 2186165), (15077, 1326025), (22475, 889543), (42775, 467387), (45725, 437233), (53041, 376925), (75385, 265205)]