21302541

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{443}}^1$

素因数の和:602

約数の個数: 32

約数和(自身を含む): 34312320

約数和(自身を除く): 13009779

約数列:

[1, 3, 9, 13, 27, 39, 117, 137, 351, 411, 443, 1233, 1329, 1781, 3699, 3987, 5343, 5759, 11961, 16029, 17277, 48087, 51831, 60691, 155493, 182073, 546219, 788983, 1638657, 2366949, 7100847, 21302541]

約数ペア:

[(1, 21302541), (3, 7100847), (9, 2366949), (13, 1638657), (27, 788983), (39, 546219), (117, 182073), (137, 155493), (351, 60691), (411, 51831), (443, 48087), (1233, 17277), (1329, 16029), (1781, 11961), (3699, 5759), (3987, 5343)]