21399135

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{38557}}^1$

素因数の和:38602

約数の個数: 16

約数和(自身を含む): 35164896

約数和(自身を除く): 13765761

約数列:

[1, 3, 5, 15, 37, 111, 185, 555, 38557, 115671, 192785, 578355, 1426609, 4279827, 7133045, 21399135]

約数ペア:

[(1, 21399135), (3, 7133045), (5, 4279827), (15, 1426609), (37, 578355), (111, 192785), (185, 115671), (555, 38557)]