21161559

素因数分解:

$3^1\times {\mathrm{157}}^1\times {\mathrm{179}}^1\times {\mathrm{251}}^1$

素因数の和:590

約数の個数: 16

約数和(自身を含む): 28667520

約数和(自身を除く): 7505961

約数列:

[1, 3, 157, 179, 251, 471, 537, 753, 28103, 39407, 44929, 84309, 118221, 134787, 7053853, 21161559]

約数ペア:

[(1, 21161559), (3, 7053853), (157, 134787), (179, 118221), (251, 84309), (471, 44929), (537, 39407), (753, 28103)]