19919978

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{33311}}^1$

素因数の和:33349

約数の個数: 16

約数和(自身を含む): 33578496

約数和(自身を除く): 13658518

約数列:

[1, 2, 13, 23, 26, 46, 299, 598, 33311, 66622, 433043, 766153, 866086, 1532306, 9959989, 19919978]

約数ペア:

[(1, 19919978), (2, 9959989), (13, 1532306), (23, 866086), (26, 766153), (46, 433043), (299, 66622), (598, 33311)]