21511858

素因数分解:

$2^1\times {\mathrm{79}}^1\times {\mathrm{173}}^1\times {\mathrm{787}}^1$

素因数の和:1041

約数の個数: 16

約数和(自身を含む): 32906880

約数和(自身を除く): 11395022

約数列:

[1, 2, 79, 158, 173, 346, 787, 1574, 13667, 27334, 62173, 124346, 136151, 272302, 10755929, 21511858]

約数ペア:

[(1, 21511858), (2, 10755929), (79, 272302), (158, 136151), (173, 124346), (346, 62173), (787, 27334), (1574, 13667)]