20031921

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{263}}^1$

素因数の和:323

約数の個数: 64

約数和(自身を含む): 37847040

約数和(自身を除く): 17815119

約数列:

[1, 3, 7, 9, 13, 21, 27, 31, 39, 63, 91, 93, 117, 189, 217, 263, 273, 279, 351, 403, 651, 789, 819, 837, 1209, 1841, 1953, 2367, 2457, 2821, 3419, 3627, 5523, 5859, 7101, 8153, 8463, 10257, 10881, 16569, 23933, 24459, 25389, 30771, 49707, 57071, 71799, 73377, 76167, 92313, 105989, 171213, 215397, 220131, 317967, 513639, 646191, 741923, 953901, 1540917, 2225769, 2861703, 6677307, 20031921]

約数ペア:

[(1, 20031921), (3, 6677307), (7, 2861703), (9, 2225769), (13, 1540917), (21, 953901), (27, 741923), (31, 646191), (39, 513639), (63, 317967), (91, 220131), (93, 215397), (117, 171213), (189, 105989), (217, 92313), (263, 76167), (273, 73377), (279, 71799), (351, 57071), (403, 49707), (651, 30771), (789, 25389), (819, 24459), (837, 23933), (1209, 16569), (1841, 10881), (1953, 10257), (2367, 8463), (2457, 8153), (2821, 7101), (3419, 5859), (3627, 5523)]