19977175

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{173}}^1$

素因数の和:363

約数の個数: 24

約数和(自身を含む): 25891200

約数和(自身を除く): 5914025

約数列:

[1, 5, 25, 31, 149, 155, 173, 745, 775, 865, 3725, 4325, 4619, 5363, 23095, 25777, 26815, 115475, 128885, 134075, 644425, 799087, 3995435, 19977175]

約数ペア:

[(1, 19977175), (5, 3995435), (25, 799087), (31, 644425), (149, 134075), (155, 128885), (173, 115475), (745, 26815), (775, 25777), (865, 23095), (3725, 5363), (4325, 4619)]