20921081853

素因数分解:

$3^1\times 7^1\times {\mathrm{983}}^1\times {\mathrm{1013471}}^1$

素因数の和:1014464

約数の個数: 16

約数和(自身を含む): 31912206336

約数和(自身を除く): 10991124483

約数列:

[1, 3, 7, 21, 983, 2949, 6881, 20643, 1013471, 3040413, 7094297, 21282891, 996241993, 2988725979, 6973693951, 20921081853]

約数ペア:

[(1, 20921081853), (3, 6973693951), (7, 2988725979), (21, 996241993), (983, 21282891), (2949, 7094297), (6881, 3040413), (20643, 1013471)]