19493890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{149953}}^1$

素因数の和:149973

約数の個数: 16

約数和(自身を含む): 37788408

約数和(自身を除く): 18294518

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 149953, 299906, 749765, 1499530, 1949389, 3898778, 9746945, 19493890]

約数ペア:

[(1, 19493890), (2, 9746945), (5, 3898778), (10, 1949389), (13, 1499530), (26, 749765), (65, 299906), (130, 149953)]