21978093

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{173}}^1$

素因数の和:293

約数の個数: 32

約数和(自身を含む): 32472576

約数和(自身を除く): 10494483

約数列:

[1, 3, 17, 47, 51, 53, 141, 159, 173, 519, 799, 901, 2397, 2491, 2703, 2941, 7473, 8131, 8823, 9169, 24393, 27507, 42347, 127041, 138227, 155873, 414681, 430943, 467619, 1292829, 7326031, 21978093]

約数ペア:

[(1, 21978093), (3, 7326031), (17, 1292829), (47, 467619), (51, 430943), (53, 414681), (141, 155873), (159, 138227), (173, 127041), (519, 42347), (799, 27507), (901, 24393), (2397, 9169), (2491, 8823), (2703, 8131), (2941, 7473)]