21021010

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{123653}}^1$

素因数の和:123677

約数の個数: 16

約数和(自身を含む): 40063896

約数和(自身を除く): 19042886

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 123653, 247306, 618265, 1236530, 2102101, 4204202, 10510505, 21021010]

約数ペア:

[(1, 21021010), (2, 10510505), (5, 4204202), (10, 2102101), (17, 1236530), (34, 618265), (85, 247306), (170, 123653)]