21919792

素因数分解:

$2^4\times {\mathrm{173}}^1\times {\mathrm{7919}}^1$

素因数の和:8100

約数の個数: 20

約数和(自身を含む): 42720480

約数和(自身を除く): 20800688

約数列:

[1, 2, 4, 8, 16, 173, 346, 692, 1384, 2768, 7919, 15838, 31676, 63352, 126704, 1369987, 2739974, 5479948, 10959896, 21919792]

約数ペア:

[(1, 21919792), (2, 10959896), (4, 5479948), (8, 2739974), (16, 1369987), (173, 126704), (346, 63352), (692, 31676), (1384, 15838), (2768, 7919)]