18984865

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{2311}}^1$

素因数の和:2400

約数の個数: 16

約数和(自身を含む): 23970816

約数和(自身を除く): 4985951

約数列:

[1, 5, 31, 53, 155, 265, 1643, 2311, 8215, 11555, 71641, 122483, 358205, 612415, 3796973, 18984865]

約数ペア:

[(1, 18984865), (5, 3796973), (31, 612415), (53, 358205), (155, 122483), (265, 71641), (1643, 11555), (2311, 8215)]