21137871

素因数分解:

$3^1\times {\mathrm{59}}^1\times {\mathrm{307}}^1\times {\mathrm{389}}^1$

素因数の和:758

約数の個数: 16

約数和(自身を含む): 28828800

約数和(自身を除く): 7690929

約数列:

[1, 3, 59, 177, 307, 389, 921, 1167, 18113, 22951, 54339, 68853, 119423, 358269, 7045957, 21137871]

約数ペア:

[(1, 21137871), (3, 7045957), (59, 358269), (177, 119423), (307, 68853), (389, 54339), (921, 22951), (1167, 18113)]