20799585

素因数分解:

$3^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1$

素因数の和:109

約数の個数: 96

約数和(自身を含む): 42456960

約数和(自身を除く): 21657375

約数列:

[1, 3, 5, 9, 15, 17, 19, 27, 45, 51, 53, 57, 81, 85, 95, 135, 153, 159, 171, 243, 255, 265, 285, 323, 405, 459, 477, 513, 765, 795, 855, 901, 969, 1007, 1215, 1377, 1431, 1539, 1615, 2295, 2385, 2565, 2703, 2907, 3021, 4131, 4293, 4505, 4617, 4845, 5035, 6885, 7155, 7695, 8109, 8721, 9063, 12879, 13515, 14535, 15105, 17119, 20655, 21465, 23085, 24327, 26163, 27189, 40545, 43605, 45315, 51357, 64395, 72981, 78489, 81567, 85595, 121635, 130815, 135945, 154071, 218943, 244701, 256785, 364905, 392445, 407835, 462213, 770355, 1094715, 1223505, 1386639, 2311065, 4159917, 6933195, 20799585]

約数ペア:

[(1, 20799585), (3, 6933195), (5, 4159917), (9, 2311065), (15, 1386639), (17, 1223505), (19, 1094715), (27, 770355), (45, 462213), (51, 407835), (53, 392445), (57, 364905), (81, 256785), (85, 244701), (95, 218943), (135, 154071), (153, 135945), (159, 130815), (171, 121635), (243, 85595), (255, 81567), (265, 78489), (285, 72981), (323, 64395), (405, 51357), (459, 45315), (477, 43605), (513, 40545), (765, 27189), (795, 26163), (855, 24327), (901, 23085), (969, 21465), (1007, 20655), (1215, 17119), (1377, 15105), (1431, 14535), (1539, 13515), (1615, 12879), (2295, 9063), (2385, 8721), (2565, 8109), (2703, 7695), (2907, 7155), (3021, 6885), (4131, 5035), (4293, 4845), (4505, 4617)]