19904816

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{33623}}^1$

素因数の和:33668

約数の個数: 20

約数和(自身を含む): 39609072

約数和(自身を除く): 19704256

約数列:

[1, 2, 4, 8, 16, 37, 74, 148, 296, 592, 33623, 67246, 134492, 268984, 537968, 1244051, 2488102, 4976204, 9952408, 19904816]

約数ペア:

[(1, 19904816), (2, 9952408), (4, 4976204), (8, 2488102), (16, 1244051), (37, 537968), (74, 268984), (148, 134492), (296, 67246), (592, 33623)]