12990256

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{21943}}^1$

素因数の和:21988

約数の個数: 20

約数和(自身を含む): 25850032

約数和(自身を除く): 12859776

約数列:

[1, 2, 4, 8, 16, 37, 74, 148, 296, 592, 21943, 43886, 87772, 175544, 351088, 811891, 1623782, 3247564, 6495128, 12990256]

約数ペア:

[(1, 12990256), (2, 6495128), (4, 3247564), (8, 1623782), (16, 811891), (37, 351088), (74, 175544), (148, 87772), (296, 43886), (592, 21943)]