20755197

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{101}}^1$

素因数の和:215

約数の個数: 40

約数和(自身を含む): 32582880

約数和(自身を除く): 11827683

約数列:

[1, 3, 9, 27, 43, 59, 81, 101, 129, 177, 303, 387, 531, 909, 1161, 1593, 2537, 2727, 3483, 4343, 4779, 5959, 7611, 8181, 13029, 17877, 22833, 39087, 53631, 68499, 117261, 160893, 205497, 256237, 351783, 482679, 768711, 2306133, 6918399, 20755197]

約数ペア:

[(1, 20755197), (3, 6918399), (9, 2306133), (27, 768711), (43, 482679), (59, 351783), (81, 256237), (101, 205497), (129, 160893), (177, 117261), (303, 68499), (387, 53631), (531, 39087), (909, 22833), (1161, 17877), (1593, 13029), (2537, 8181), (2727, 7611), (3483, 5959), (4343, 4779)]