209561209

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{1153}}^1$

素因数の和:1249

約数の個数: 32

約数和(自身を含む): 260563968

約数和(自身を除く): 51002759

約数列:

[1, 11, 13, 31, 41, 143, 341, 403, 451, 533, 1153, 1271, 4433, 5863, 12683, 13981, 14989, 16523, 35743, 47273, 164879, 181753, 393173, 464659, 520003, 614549, 1465463, 5111249, 6760039, 16120093, 19051019, 209561209]

約数ペア:

[(1, 209561209), (11, 19051019), (13, 16120093), (31, 6760039), (41, 5111249), (143, 1465463), (341, 614549), (403, 520003), (451, 464659), (533, 393173), (1153, 181753), (1271, 164879), (4433, 47273), (5863, 35743), (12683, 16523), (13981, 14989)]