18865175

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:192

約数の個数: 48

約数和(自身を含む): 28807680

約数和(自身を除く): 9942505

約数列:

[1, 5, 7, 23, 25, 35, 43, 109, 115, 161, 175, 215, 301, 545, 575, 763, 805, 989, 1075, 1505, 2507, 2725, 3815, 4025, 4687, 4945, 6923, 7525, 12535, 17549, 19075, 23435, 24725, 32809, 34615, 62675, 87745, 107801, 117175, 164045, 173075, 438725, 539005, 754607, 820225, 2695025, 3773035, 18865175]

約数ペア:

[(1, 18865175), (5, 3773035), (7, 2695025), (23, 820225), (25, 754607), (35, 539005), (43, 438725), (109, 173075), (115, 164045), (161, 117175), (175, 107801), (215, 87745), (301, 62675), (545, 34615), (575, 32809), (763, 24725), (805, 23435), (989, 19075), (1075, 17549), (1505, 12535), (2507, 7525), (2725, 6923), (3815, 4945), (4025, 4687)]