21443409

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{10781}}^1$

素因数の和:10817

約数の個数: 24

約数和(自身を含む): 35321832

約数和(自身を除く): 13878423

約数列:

[1, 3, 9, 13, 17, 39, 51, 117, 153, 221, 663, 1989, 10781, 32343, 97029, 140153, 183277, 420459, 549831, 1261377, 1649493, 2382601, 7147803, 21443409]

約数ペア:

[(1, 21443409), (3, 7147803), (9, 2382601), (13, 1649493), (17, 1261377), (39, 549831), (51, 420459), (117, 183277), (153, 140153), (221, 97029), (663, 32343), (1989, 10781)]