20123285

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{941}}^1$

素因数の和:1013

約数の個数: 32

約数和(自身を含む): 30385152

約数和(自身を除く): 10261867

約数列:

[1, 5, 7, 13, 35, 47, 65, 91, 235, 329, 455, 611, 941, 1645, 3055, 4277, 4705, 6587, 12233, 21385, 32935, 44227, 61165, 85631, 221135, 309589, 428155, 574951, 1547945, 2874755, 4024657, 20123285]

約数ペア:

[(1, 20123285), (5, 4024657), (7, 2874755), (13, 1547945), (35, 574951), (47, 428155), (65, 309589), (91, 221135), (235, 85631), (329, 61165), (455, 44227), (611, 32935), (941, 21385), (1645, 12233), (3055, 6587), (4277, 4705)]