21004125

素因数分解:

$3^1\times 5^3\times {\mathrm{79}}^1\times {\mathrm{709}}^1$

素因数の和:806

約数の個数: 32

約数和(自身を含む): 35443200

約数和(自身を除く): 14439075

約数列:

[1, 3, 5, 15, 25, 75, 79, 125, 237, 375, 395, 709, 1185, 1975, 2127, 3545, 5925, 9875, 10635, 17725, 29625, 53175, 56011, 88625, 168033, 265875, 280055, 840165, 1400275, 4200825, 7001375, 21004125]

約数ペア:

[(1, 21004125), (3, 7001375), (5, 4200825), (15, 1400275), (25, 840165), (75, 280055), (79, 265875), (125, 168033), (237, 88625), (375, 56011), (395, 53175), (709, 29625), (1185, 17725), (1975, 10635), (2127, 9875), (3545, 5925)]