19983515

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{991}}^1$

素因数の和:1142

約数の個数: 16

約数和(自身を含む): 24879360

約数和(自身を除く): 4895845

約数列:

[1, 5, 37, 109, 185, 545, 991, 4033, 4955, 20165, 36667, 108019, 183335, 540095, 3996703, 19983515]

約数ペア:

[(1, 19983515), (5, 3996703), (37, 540095), (109, 183335), (185, 108019), (545, 36667), (991, 20165), (4033, 4955)]