28046420

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19751}}^1$

素因数の和:19831

約数の個数: 24

約数和(自身を含む): 59730048

約数和(自身を除く): 31683628

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 19751, 39502, 79004, 98755, 197510, 395020, 1402321, 2804642, 5609284, 7011605, 14023210, 28046420]

約数ペア:

[(1, 28046420), (2, 14023210), (4, 7011605), (5, 5609284), (10, 2804642), (20, 1402321), (71, 395020), (142, 197510), (284, 98755), (355, 79004), (710, 39502), (1420, 19751)]