21330560

素因数分解:

$2^7\times 5^1\times {\mathrm{33329}}^1$

素因数の和:33348

約数の個数: 32

約数和(自身を含む): 50994900

約数和(自身を除く): 29664340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33329, 66658, 133316, 166645, 266632, 333290, 533264, 666580, 1066528, 1333160, 2133056, 2666320, 4266112, 5332640, 10665280, 21330560]

約数ペア:

[(1, 21330560), (2, 10665280), (4, 5332640), (5, 4266112), (8, 2666320), (10, 2133056), (16, 1333160), (20, 1066528), (32, 666580), (40, 533264), (64, 333290), (80, 266632), (128, 166645), (160, 133316), (320, 66658), (640, 33329)]