19981406

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{9311}}^1$

素因数の和:9379

約数の個数: 16

約数和(自身を含む): 31847040

約数和(自身を除く): 11865634

約数列:

[1, 2, 29, 37, 58, 74, 1073, 2146, 9311, 18622, 270019, 344507, 540038, 689014, 9990703, 19981406]

約数ペア:

[(1, 19981406), (2, 9990703), (29, 689014), (37, 540038), (58, 344507), (74, 270019), (1073, 18622), (2146, 9311)]