64938760

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{6317}}^1$

素因数の和:6585

約数の個数: 32

約数和(自身を含む): 146703960

約数和(自身を除く): 81765200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 6317, 10280, 12634, 25268, 31585, 50536, 63170, 126340, 252680, 1623469, 3246938, 6493876, 8117345, 12987752, 16234690, 32469380, 64938760]

約数ペア:

[(1, 64938760), (2, 32469380), (4, 16234690), (5, 12987752), (8, 8117345), (10, 6493876), (20, 3246938), (40, 1623469), (257, 252680), (514, 126340), (1028, 63170), (1285, 50536), (2056, 31585), (2570, 25268), (5140, 12634), (6317, 10280)]