21661360

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{823}}^1$

素因数の和:890

約数の個数: 80

約数和(自身を含む): 58853376

約数和(自身を除く): 37192016

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 47, 56, 70, 80, 94, 112, 140, 188, 235, 280, 329, 376, 470, 560, 658, 752, 823, 940, 1316, 1645, 1646, 1880, 2632, 3290, 3292, 3760, 4115, 5264, 5761, 6580, 6584, 8230, 11522, 13160, 13168, 16460, 23044, 26320, 28805, 32920, 38681, 46088, 57610, 65840, 77362, 92176, 115220, 154724, 193405, 230440, 270767, 309448, 386810, 460880, 541534, 618896, 773620, 1083068, 1353835, 1547240, 2166136, 2707670, 3094480, 4332272, 5415340, 10830680, 21661360]

約数ペア:

[(1, 21661360), (2, 10830680), (4, 5415340), (5, 4332272), (7, 3094480), (8, 2707670), (10, 2166136), (14, 1547240), (16, 1353835), (20, 1083068), (28, 773620), (35, 618896), (40, 541534), (47, 460880), (56, 386810), (70, 309448), (80, 270767), (94, 230440), (112, 193405), (140, 154724), (188, 115220), (235, 92176), (280, 77362), (329, 65840), (376, 57610), (470, 46088), (560, 38681), (658, 32920), (752, 28805), (823, 26320), (940, 23044), (1316, 16460), (1645, 13168), (1646, 13160), (1880, 11522), (2632, 8230), (3290, 6584), (3292, 6580), (3760, 5761), (4115, 5264)]