643484900639

素因数分解:

$7^4\times {\mathrm{857}}^1\times {\mathrm{312727}}^1$

素因数の和:313612

約数の個数: 20

約数和(自身を含む): 751566067824

約数和(自身を除く): 108081167185

約数列:

[1, 7, 49, 343, 857, 2401, 5999, 41993, 293951, 312727, 2057657, 2189089, 15323623, 107265361, 268007039, 750857527, 1876049273, 13132344911, 91926414377, 643484900639]

約数ペア:

[(1, 643484900639), (7, 91926414377), (49, 13132344911), (343, 1876049273), (857, 750857527), (2401, 268007039), (5999, 107265361), (41993, 15323623), (293951, 2189089), (312727, 2057657)]