21063825

素因数分解:

$3^2\times 5^2\times {\mathrm{179}}^1\times {\mathrm{523}}^1$

素因数の和:718

約数の個数: 36

約数和(自身を含む): 38010960

約数和(自身を除く): 16947135

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 179, 225, 523, 537, 895, 1569, 1611, 2615, 2685, 4475, 4707, 7845, 8055, 13075, 13425, 23535, 39225, 40275, 93617, 117675, 280851, 468085, 842553, 1404255, 2340425, 4212765, 7021275, 21063825]

約数ペア:

[(1, 21063825), (3, 7021275), (5, 4212765), (9, 2340425), (15, 1404255), (25, 842553), (45, 468085), (75, 280851), (179, 117675), (225, 93617), (523, 40275), (537, 39225), (895, 23535), (1569, 13425), (1611, 13075), (2615, 8055), (2685, 7845), (4475, 4707)]