21026075

素因数分解:

$5^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{877}}^1$

素因数の和:1031

約数の個数: 24

約数和(自身を含む): 30048672

約数和(自身を除く): 9022597

約数列:

[1, 5, 7, 25, 35, 137, 175, 685, 877, 959, 3425, 4385, 4795, 6139, 21925, 23975, 30695, 120149, 153475, 600745, 841043, 3003725, 4205215, 21026075]

約数ペア:

[(1, 21026075), (5, 4205215), (7, 3003725), (25, 841043), (35, 600745), (137, 153475), (175, 120149), (685, 30695), (877, 23975), (959, 21925), (3425, 6139), (4385, 4795)]