20521535

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{3079}}^1$

素因数の和:3158

約数の個数: 16

約数和(自身を含む): 26019840

約数和(自身を除く): 5498305

約数列:

[1, 5, 31, 43, 155, 215, 1333, 3079, 6665, 15395, 95449, 132397, 477245, 661985, 4104307, 20521535]

約数ペア:

[(1, 20521535), (5, 4104307), (31, 661985), (43, 477245), (155, 132397), (215, 95449), (1333, 15395), (3079, 6665)]