21217430

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163211}}^1$

素因数の和:163231

約数の個数: 16

約数和(自身を含む): 41129424

約数和(自身を除く): 19911994

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 163211, 326422, 816055, 1632110, 2121743, 4243486, 10608715, 21217430]

約数ペア:

[(1, 21217430), (2, 10608715), (5, 4243486), (10, 2121743), (13, 1632110), (26, 816055), (65, 326422), (130, 163211)]