78397505

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{401}}^1\times {\mathrm{641}}^1$

素因数の和:1108

約数の個数: 16

約数和(自身を含む): 96007248

約数和(自身を除く): 17609743

約数列:

[1, 5, 61, 305, 401, 641, 2005, 3205, 24461, 39101, 122305, 195505, 257041, 1285205, 15679501, 78397505]

約数ペア:

[(1, 78397505), (5, 15679501), (61, 1285205), (305, 257041), (401, 195505), (641, 122305), (2005, 39101), (3205, 24461)]