21756078

素因数分解:

$2^1\times 3^2\times {\mathrm{257}}^1\times {\mathrm{4703}}^1$

素因数の和:4968

約数の個数: 24

約数和(自身を含む): 47331648

約数和(自身を除く): 25575570

約数列:

[1, 2, 3, 6, 9, 18, 257, 514, 771, 1542, 2313, 4626, 4703, 9406, 14109, 28218, 42327, 84654, 1208671, 2417342, 3626013, 7252026, 10878039, 21756078]

約数ペア:

[(1, 21756078), (2, 10878039), (3, 7252026), (6, 3626013), (9, 2417342), (18, 1208671), (257, 84654), (514, 42327), (771, 28218), (1542, 14109), (2313, 9406), (4626, 4703)]