221520760

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{82657}}^1$

素因数の和:82735

約数の個数: 32

約数和(自身を含む): 505866960

約数和(自身を除く): 284346200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 82657, 165314, 330628, 413285, 661256, 826570, 1653140, 3306280, 5538019, 11076038, 22152076, 27690095, 44304152, 55380190, 110760380, 221520760]

約数ペア:

[(1, 221520760), (2, 110760380), (4, 55380190), (5, 44304152), (8, 27690095), (10, 22152076), (20, 11076038), (40, 5538019), (67, 3306280), (134, 1653140), (268, 826570), (335, 661256), (536, 413285), (670, 330628), (1340, 165314), (2680, 82657)]