865185740

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{645661}}^1$

素因数の和:645737

約数の個数: 24

約数和(自身を含む): 1844010672

約数和(自身を除く): 978824932

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 645661, 1291322, 2582644, 3228305, 6456610, 12913220, 43259287, 86518574, 173037148, 216296435, 432592870, 865185740]

約数ペア:

[(1, 865185740), (2, 432592870), (4, 216296435), (5, 173037148), (10, 86518574), (20, 43259287), (67, 12913220), (134, 6456610), (268, 3228305), (335, 2582644), (670, 1291322), (1340, 645661)]