81420784

素因数分解:

$2^4\times {\mathrm{619}}^1\times {\mathrm{8221}}^1$

素因数の和:8848

約数の個数: 20

約数和(自身を含む): 158026840

約数和(自身を除く): 76606056

約数列:

[1, 2, 4, 8, 16, 619, 1238, 2476, 4952, 8221, 9904, 16442, 32884, 65768, 131536, 5088799, 10177598, 20355196, 40710392, 81420784]

約数ペア:

[(1, 81420784), (2, 40710392), (4, 20355196), (8, 10177598), (16, 5088799), (619, 131536), (1238, 65768), (2476, 32884), (4952, 16442), (8221, 9904)]