21516721

素因数分解:

${\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{241}}^1$

素因数の和:424

約数の個数: 16

約数和(自身を含む): 23541760

約数和(自身を除く): 2025039

約数列:

[1, 19, 37, 127, 241, 703, 2413, 4579, 4699, 8917, 30607, 89281, 169423, 581533, 1132459, 21516721]

約数ペア:

[(1, 21516721), (19, 1132459), (37, 581533), (127, 169423), (241, 89281), (703, 30607), (2413, 8917), (4579, 4699)]