21666295

素因数分解:

$5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{13171}}^1$

素因数の和:13230

約数の個数: 16

約数和(自身を含む): 30348288

約数和(自身を除く): 8681993

約数列:

[1, 5, 7, 35, 47, 235, 329, 1645, 13171, 65855, 92197, 460985, 619037, 3095185, 4333259, 21666295]

約数ペア:

[(1, 21666295), (5, 4333259), (7, 3095185), (35, 619037), (47, 460985), (235, 92197), (329, 65855), (1645, 13171)]