81515716

素因数分解:

$2^2\times {\mathrm{139}}^1\times {\mathrm{271}}^1\times {\mathrm{541}}^1$

素因数の和:955

約数の個数: 24

約数和(自身を含む): 144475520

約数和(自身を除く): 62959804

約数列:

[1, 2, 4, 139, 271, 278, 541, 542, 556, 1082, 1084, 2164, 37669, 75199, 75338, 146611, 150398, 150676, 293222, 300796, 586444, 20378929, 40757858, 81515716]

約数ペア:

[(1, 81515716), (2, 40757858), (4, 20378929), (139, 586444), (271, 300796), (278, 293222), (541, 150676), (542, 150398), (556, 146611), (1082, 75338), (1084, 75199), (2164, 37669)]