21790278

素因数分解:

$2^1\times 3^2\times {\mathrm{131}}^1\times {\mathrm{9241}}^1$

素因数の和:9380

約数の個数: 24

約数和(自身を含む): 47577816

約数和(自身を除く): 25787538

約数列:

[1, 2, 3, 6, 9, 18, 131, 262, 393, 786, 1179, 2358, 9241, 18482, 27723, 55446, 83169, 166338, 1210571, 2421142, 3631713, 7263426, 10895139, 21790278]

約数ペア:

[(1, 21790278), (2, 10895139), (3, 7263426), (6, 3631713), (9, 2421142), (18, 1210571), (131, 166338), (262, 83169), (393, 55446), (786, 27723), (1179, 18482), (2358, 9241)]