20472904

素因数分解:

$2^3\times {\mathrm{409}}^1\times {\mathrm{6257}}^1$

素因数の和:6672

約数の個数: 16

約数和(自身を含む): 38486700

約数和(自身を除く): 18013796

約数列:

[1, 2, 4, 8, 409, 818, 1636, 3272, 6257, 12514, 25028, 50056, 2559113, 5118226, 10236452, 20472904]

約数ペア:

[(1, 20472904), (2, 10236452), (4, 5118226), (8, 2559113), (409, 50056), (818, 25028), (1636, 12514), (3272, 6257)]