19979984

素因数分解:

$2^4\times {\mathrm{631}}^1\times {\mathrm{1979}}^1$

素因数の和:2618

約数の個数: 20

約数和(自身を含む): 38792160

約数和(自身を除く): 18812176

約数列:

[1, 2, 4, 8, 16, 631, 1262, 1979, 2524, 3958, 5048, 7916, 10096, 15832, 31664, 1248749, 2497498, 4994996, 9989992, 19979984]

約数ペア:

[(1, 19979984), (2, 9989992), (4, 4994996), (8, 2497498), (16, 1248749), (631, 31664), (1262, 15832), (1979, 10096), (2524, 7916), (3958, 5048)]