20864948

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{1307}}^1$

素因数の和:1631

約数の個数: 24

約数和(自身を含む): 39480672

約数和(自身を除く): 18615724

約数列:

[1, 2, 4, 13, 26, 52, 307, 614, 1228, 1307, 2614, 3991, 5228, 7982, 15964, 16991, 33982, 67964, 401249, 802498, 1604996, 5216237, 10432474, 20864948]

約数ペア:

[(1, 20864948), (2, 10432474), (4, 5216237), (13, 1604996), (26, 802498), (52, 401249), (307, 67964), (614, 33982), (1228, 16991), (1307, 15964), (2614, 7982), (3991, 5228)]