643746530

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{66161}}^1$

素因数の和:66314

約数の個数: 32

約数和(自身を含む): 1333825920

約数和(自身を除く): 690079390

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 139, 278, 695, 973, 1390, 1946, 4865, 9730, 66161, 132322, 330805, 463127, 661610, 926254, 2315635, 4631270, 9196379, 18392758, 45981895, 64374653, 91963790, 128749306, 321873265, 643746530]

約数ペア:

[(1, 643746530), (2, 321873265), (5, 128749306), (7, 91963790), (10, 64374653), (14, 45981895), (35, 18392758), (70, 9196379), (139, 4631270), (278, 2315635), (695, 926254), (973, 661610), (1390, 463127), (1946, 330805), (4865, 132322), (9730, 66161)]