20517896

素因数分解:

$2^3\times 7^1\times {\mathrm{149}}^1\times {\mathrm{2459}}^1$

素因数の和:2621

約数の個数: 32

約数和(自身を含む): 44280000

約数和(自身を除く): 23762104

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 149, 298, 596, 1043, 1192, 2086, 2459, 4172, 4918, 8344, 9836, 17213, 19672, 34426, 68852, 137704, 366391, 732782, 1465564, 2564737, 2931128, 5129474, 10258948, 20517896]

約数ペア:

[(1, 20517896), (2, 10258948), (4, 5129474), (7, 2931128), (8, 2564737), (14, 1465564), (28, 732782), (56, 366391), (149, 137704), (298, 68852), (596, 34426), (1043, 19672), (1192, 17213), (2086, 9836), (2459, 8344), (4172, 4918)]