21217677

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{4153}}^1$

素因数の和:4300

約数の個数: 16

約数和(自身を含む): 30706368

約数和(自身を除く): 9488691

約数列:

[1, 3, 13, 39, 131, 393, 1703, 4153, 5109, 12459, 53989, 161967, 544043, 1632129, 7072559, 21217677]

約数ペア:

[(1, 21217677), (3, 7072559), (13, 1632129), (39, 544043), (131, 161967), (393, 53989), (1703, 12459), (4153, 5109)]