19991374

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{787}}^1\times {\mathrm{977}}^1$

素因数の和:1779

約数の個数: 16

約数和(自身を含む): 32367888

約数和(自身を除く): 12376514

約数列:

[1, 2, 13, 26, 787, 977, 1574, 1954, 10231, 12701, 20462, 25402, 768899, 1537798, 9995687, 19991374]

約数ペア:

[(1, 19991374), (2, 9995687), (13, 1537798), (26, 768899), (787, 25402), (977, 20462), (1574, 12701), (1954, 10231)]