21088539

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{1171}}^1$

素因数の和:1232

約数の個数: 32

約数和(自身を含む): 33753600

約数和(自身を除く): 12665061

約数列:

[1, 3, 9, 23, 27, 29, 69, 87, 207, 261, 621, 667, 783, 1171, 2001, 3513, 6003, 10539, 18009, 26933, 31617, 33959, 80799, 101877, 242397, 305631, 727191, 781057, 916893, 2343171, 7029513, 21088539]

約数ペア:

[(1, 21088539), (3, 7029513), (9, 2343171), (23, 916893), (27, 781057), (29, 727191), (69, 305631), (87, 242397), (207, 101877), (261, 80799), (621, 33959), (667, 31617), (783, 26933), (1171, 18009), (2001, 10539), (3513, 6003)]