21566779

素因数分解:

${\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{941}}^1$

素因数の和:1038

約数の個数: 16

約数和(自身を含む): 24371424

約数和(自身を除く): 2804645

約数列:

[1, 13, 41, 43, 533, 559, 941, 1763, 12233, 22919, 38581, 40463, 501553, 526019, 1658983, 21566779]

約数ペア:

[(1, 21566779), (13, 1658983), (41, 526019), (43, 501553), (533, 40463), (559, 38581), (941, 22919), (1763, 12233)]