21044415

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1$

素因数の和:196

約数の個数: 64

約数和(自身を含む): 40550400

約数和(自身を除く): 19505985

約数列:

[1, 3, 5, 7, 15, 21, 35, 43, 59, 79, 105, 129, 177, 215, 237, 295, 301, 395, 413, 553, 645, 885, 903, 1185, 1239, 1505, 1659, 2065, 2537, 2765, 3397, 4515, 4661, 6195, 7611, 8295, 10191, 12685, 13983, 16985, 17759, 23305, 23779, 32627, 38055, 50955, 53277, 69915, 71337, 88795, 97881, 118895, 163135, 200423, 266385, 356685, 489405, 601269, 1002115, 1402961, 3006345, 4208883, 7014805, 21044415]

約数ペア:

[(1, 21044415), (3, 7014805), (5, 4208883), (7, 3006345), (15, 1402961), (21, 1002115), (35, 601269), (43, 489405), (59, 356685), (79, 266385), (105, 200423), (129, 163135), (177, 118895), (215, 97881), (237, 88795), (295, 71337), (301, 69915), (395, 53277), (413, 50955), (553, 38055), (645, 32627), (885, 23779), (903, 23305), (1185, 17759), (1239, 16985), (1505, 13983), (1659, 12685), (2065, 10191), (2537, 8295), (2765, 7611), (3397, 6195), (4515, 4661)]