21014805

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{193}}^1$

素因数の和:286

約数の個数: 64

約数和(自身を含む): 41568768

約数和(自身を除く): 20553963

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 61, 85, 105, 119, 183, 193, 255, 305, 357, 427, 579, 595, 915, 965, 1037, 1281, 1351, 1785, 2135, 2895, 3111, 3281, 4053, 5185, 6405, 6755, 7259, 9843, 11773, 15555, 16405, 20265, 21777, 22967, 35319, 36295, 49215, 58865, 68901, 82411, 108885, 114835, 176595, 200141, 247233, 344505, 412055, 600423, 1000705, 1236165, 1400987, 3002115, 4202961, 7004935, 21014805]

約数ペア:

[(1, 21014805), (3, 7004935), (5, 4202961), (7, 3002115), (15, 1400987), (17, 1236165), (21, 1000705), (35, 600423), (51, 412055), (61, 344505), (85, 247233), (105, 200141), (119, 176595), (183, 114835), (193, 108885), (255, 82411), (305, 68901), (357, 58865), (427, 49215), (579, 36295), (595, 35319), (915, 22967), (965, 21777), (1037, 20265), (1281, 16405), (1351, 15555), (1785, 11773), (2135, 9843), (2895, 7259), (3111, 6755), (3281, 6405), (4053, 5185)]