28980213

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{1993}}^1$

素因数の和:2164

約数の個数: 16

約数和(自身を含む): 40007616

約数和(自身を除く): 11027403

約数列:

[1, 3, 37, 111, 131, 393, 1993, 4847, 5979, 14541, 73741, 221223, 261083, 783249, 9660071, 28980213]

約数ペア:

[(1, 28980213), (3, 9660071), (37, 783249), (111, 261083), (131, 221223), (393, 73741), (1993, 14541), (4847, 5979)]