21981258

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{93937}}^1$

素因数の和:93958

約数の個数: 24

約数和(自身を含む): 51290148

約数和(自身を除く): 29308890

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 234, 93937, 187874, 281811, 563622, 845433, 1221181, 1690866, 2442362, 3663543, 7327086, 10990629, 21981258]

約数ペア:

[(1, 21981258), (2, 10990629), (3, 7327086), (6, 3663543), (9, 2442362), (13, 1690866), (18, 1221181), (26, 845433), (39, 563622), (78, 281811), (117, 187874), (234, 93937)]