21192705

素因数分解:

$3^3\times 5^1\times {\mathrm{179}}^1\times {\mathrm{877}}^1$

素因数の和:1070

約数の個数: 32

約数和(自身を含む): 37929600

約数和(自身を除く): 16736895

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 179, 537, 877, 895, 1611, 2631, 2685, 4385, 4833, 7893, 8055, 13155, 23679, 24165, 39465, 118395, 156983, 470949, 784915, 1412847, 2354745, 4238541, 7064235, 21192705]

約数ペア:

[(1, 21192705), (3, 7064235), (5, 4238541), (9, 2354745), (15, 1412847), (27, 784915), (45, 470949), (135, 156983), (179, 118395), (537, 39465), (877, 24165), (895, 23679), (1611, 13155), (2631, 8055), (2685, 7893), (4385, 4833)]