20528895

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{787}}^1$

素因数の和:879

約数の個数: 32

約数和(自身を含む): 34495488

約数和(自身を除く): 13966593

約数列:

[1, 3, 5, 15, 37, 47, 111, 141, 185, 235, 555, 705, 787, 1739, 2361, 3935, 5217, 8695, 11805, 26085, 29119, 36989, 87357, 110967, 145595, 184945, 436785, 554835, 1368593, 4105779, 6842965, 20528895]

約数ペア:

[(1, 20528895), (3, 6842965), (5, 4105779), (15, 1368593), (37, 554835), (47, 436785), (111, 184945), (141, 145595), (185, 110967), (235, 87357), (555, 36989), (705, 29119), (787, 26085), (1739, 11805), (2361, 8695), (3935, 5217)]