87021620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{621583}}^1$

素因数の和:621599

約数の個数: 24

約数和(自身を含む): 208852224

約数和(自身を除く): 121830604

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 621583, 1243166, 2486332, 3107915, 4351081, 6215830, 8702162, 12431660, 17404324, 21755405, 43510810, 87021620]

約数ペア:

[(1, 87021620), (2, 43510810), (4, 21755405), (5, 17404324), (7, 12431660), (10, 8702162), (14, 6215830), (20, 4351081), (28, 3107915), (35, 2486332), (70, 1243166), (140, 621583)]