64820540

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{12611}}^1$

素因数の和:12877

約数の個数: 24

約数和(自身を含む): 136663632

約数和(自身を除く): 71843092

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 5140, 12611, 25222, 50444, 63055, 126110, 252220, 3241027, 6482054, 12964108, 16205135, 32410270, 64820540]

約数ペア:

[(1, 64820540), (2, 32410270), (4, 16205135), (5, 12964108), (10, 6482054), (20, 3241027), (257, 252220), (514, 126110), (1028, 63055), (1285, 50444), (2570, 25222), (5140, 12611)]