21216870

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{179}}^1\times {\mathrm{439}}^1$

素因数の和:634

約数の個数: 64

約数和(自身を含む): 57024000

約数和(自身を除く): 35807130

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 179, 270, 358, 439, 537, 878, 895, 1074, 1317, 1611, 1790, 2195, 2634, 2685, 3222, 3951, 4390, 4833, 5370, 6585, 7902, 8055, 9666, 11853, 13170, 16110, 19755, 23706, 24165, 39510, 48330, 59265, 78581, 118530, 157162, 235743, 392905, 471486, 707229, 785810, 1178715, 1414458, 2121687, 2357430, 3536145, 4243374, 7072290, 10608435, 21216870]

約数ペア:

[(1, 21216870), (2, 10608435), (3, 7072290), (5, 4243374), (6, 3536145), (9, 2357430), (10, 2121687), (15, 1414458), (18, 1178715), (27, 785810), (30, 707229), (45, 471486), (54, 392905), (90, 235743), (135, 157162), (179, 118530), (270, 78581), (358, 59265), (439, 48330), (537, 39510), (878, 24165), (895, 23706), (1074, 19755), (1317, 16110), (1611, 13170), (1790, 11853), (2195, 9666), (2634, 8055), (2685, 7902), (3222, 6585), (3951, 5370), (4390, 4833)]