19872125

素因数分解:

$5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1747}}^1$

素因数の和:1782

約数の個数: 32

約数和(自身を含む): 30541056

約数和(自身を除く): 10668931

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 125, 175, 325, 455, 875, 1625, 1747, 2275, 8735, 11375, 12229, 22711, 43675, 61145, 113555, 158977, 218375, 305725, 567775, 794885, 1528625, 2838875, 3974425, 19872125]

約数ペア:

[(1, 19872125), (5, 3974425), (7, 2838875), (13, 1528625), (25, 794885), (35, 567775), (65, 305725), (91, 218375), (125, 158977), (175, 113555), (325, 61145), (455, 43675), (875, 22711), (1625, 12229), (1747, 11375), (2275, 8735)]