21113449

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{653}}^1$

素因数の和:840

約数の個数: 16

約数和(自身を含む): 25113600

約数和(自身を除く): 4000151

約数列:

[1, 7, 31, 149, 217, 653, 1043, 4571, 4619, 20243, 32333, 97297, 141701, 681079, 3016207, 21113449]

約数ペア:

[(1, 21113449), (7, 3016207), (31, 681079), (149, 141701), (217, 97297), (653, 32333), (1043, 20243), (4571, 4619)]