21201675

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{829}}^1$

素因数の和:884

約数の個数: 48

約数和(自身を含む): 39521280

約数和(自身を除く): 18319605

約数列:

[1, 3, 5, 11, 15, 25, 31, 33, 55, 75, 93, 155, 165, 275, 341, 465, 775, 825, 829, 1023, 1705, 2325, 2487, 4145, 5115, 8525, 9119, 12435, 20725, 25575, 25699, 27357, 45595, 62175, 77097, 128495, 136785, 227975, 282689, 385485, 642475, 683925, 848067, 1413445, 1927425, 4240335, 7067225, 21201675]

約数ペア:

[(1, 21201675), (3, 7067225), (5, 4240335), (11, 1927425), (15, 1413445), (25, 848067), (31, 683925), (33, 642475), (55, 385485), (75, 282689), (93, 227975), (155, 136785), (165, 128495), (275, 77097), (341, 62175), (465, 45595), (775, 27357), (825, 25699), (829, 25575), (1023, 20725), (1705, 12435), (2325, 9119), (2487, 8525), (4145, 5115)]