20556585

素因数分解:

$3^5\times 5^1\times 7^1\times {\mathrm{2417}}^1$

素因数の和:2444

約数の個数: 48

約数和(自身を含む): 42247296

約数和(自身を除く): 21690711

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 243, 315, 405, 567, 945, 1215, 1701, 2417, 2835, 7251, 8505, 12085, 16919, 21753, 36255, 50757, 65259, 84595, 108765, 152271, 195777, 253785, 326295, 456813, 587331, 761355, 978885, 1370439, 2284065, 2936655, 4111317, 6852195, 20556585]

約数ペア:

[(1, 20556585), (3, 6852195), (5, 4111317), (7, 2936655), (9, 2284065), (15, 1370439), (21, 978885), (27, 761355), (35, 587331), (45, 456813), (63, 326295), (81, 253785), (105, 195777), (135, 152271), (189, 108765), (243, 84595), (315, 65259), (405, 50757), (567, 36255), (945, 21753), (1215, 16919), (1701, 12085), (2417, 8505), (2835, 7251)]