19987485

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{190357}}^1$

素因数の和:190372

約数の個数: 16

約数和(自身を含む): 36548736

約数和(自身を除く): 16561251

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 190357, 571071, 951785, 1332499, 2855355, 3997497, 6662495, 19987485]

約数ペア:

[(1, 19987485), (3, 6662495), (5, 3997497), (7, 2855355), (15, 1332499), (21, 951785), (35, 571071), (105, 190357)]