409631408

素因数分解:

$2^4\times {\mathrm{997}}^1\times {\mathrm{25679}}^1$

素因数の和:26684

約数の個数: 20

約数和(自身を含む): 794487840

約数和(自身を除く): 384856432

約数列:

[1, 2, 4, 8, 16, 997, 1994, 3988, 7976, 15952, 25679, 51358, 102716, 205432, 410864, 25601963, 51203926, 102407852, 204815704, 409631408]

約数ペア:

[(1, 409631408), (2, 204815704), (4, 102407852), (8, 51203926), (16, 25601963), (997, 410864), (1994, 205432), (3988, 102716), (7976, 51358), (15952, 25679)]