20987445

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{48247}}^1$

素因数の和:48284

約数の個数: 16

約数和(自身を含む): 34738560

約数和(自身を除く): 13751115

約数列:

[1, 3, 5, 15, 29, 87, 145, 435, 48247, 144741, 241235, 723705, 1399163, 4197489, 6995815, 20987445]

約数ペア:

[(1, 20987445), (3, 6995815), (5, 4197489), (15, 1399163), (29, 723705), (87, 241235), (145, 144741), (435, 48247)]