21377296

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{78593}}^1$

素因数の和:78618

約数の個数: 20

約数和(自身を含む): 43855452

約数和(自身を除く): 22478156

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 78593, 157186, 314372, 628744, 1257488, 1336081, 2672162, 5344324, 10688648, 21377296]

約数ペア:

[(1, 21377296), (2, 10688648), (4, 5344324), (8, 2672162), (16, 1336081), (17, 1257488), (34, 628744), (68, 314372), (136, 157186), (272, 78593)]