19864724

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{1889}}^1$

素因数の和:2143

約数の個数: 24

約数和(自身を含む): 38102400

約数和(自身を除く): 18237676

約数列:

[1, 2, 4, 11, 22, 44, 239, 478, 956, 1889, 2629, 3778, 5258, 7556, 10516, 20779, 41558, 83116, 451471, 902942, 1805884, 4966181, 9932362, 19864724]

約数ペア:

[(1, 19864724), (2, 9932362), (4, 4966181), (11, 1805884), (22, 902942), (44, 451471), (239, 83116), (478, 41558), (956, 20779), (1889, 10516), (2629, 7556), (3778, 5258)]