21620365

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{487}}^1\times {\mathrm{683}}^1$

素因数の和:1188

約数の個数: 16

約数和(自身を含む): 28038528

約数和(自身を除く): 6418163

約数列:

[1, 5, 13, 65, 487, 683, 2435, 3415, 6331, 8879, 31655, 44395, 332621, 1663105, 4324073, 21620365]

約数ペア:

[(1, 21620365), (5, 4324073), (13, 1663105), (65, 332621), (487, 44395), (683, 31655), (2435, 8879), (3415, 6331)]