21108640

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{401}}^1$

素因数の和:470

約数の個数: 96

約数和(自身を含む): 58351104

約数和(自身を除く): 37242464

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 47, 56, 70, 80, 94, 112, 140, 160, 188, 224, 235, 280, 329, 376, 401, 470, 560, 658, 752, 802, 940, 1120, 1316, 1504, 1604, 1645, 1880, 2005, 2632, 2807, 3208, 3290, 3760, 4010, 5264, 5614, 6416, 6580, 7520, 8020, 10528, 11228, 12832, 13160, 14035, 16040, 18847, 22456, 26320, 28070, 32080, 37694, 44912, 52640, 56140, 64160, 75388, 89824, 94235, 112280, 131929, 150776, 188470, 224560, 263858, 301552, 376940, 449120, 527716, 603104, 659645, 753880, 1055432, 1319290, 1507760, 2110864, 2638580, 3015520, 4221728, 5277160, 10554320, 21108640]

約数ペア:

[(1, 21108640), (2, 10554320), (4, 5277160), (5, 4221728), (7, 3015520), (8, 2638580), (10, 2110864), (14, 1507760), (16, 1319290), (20, 1055432), (28, 753880), (32, 659645), (35, 603104), (40, 527716), (47, 449120), (56, 376940), (70, 301552), (80, 263858), (94, 224560), (112, 188470), (140, 150776), (160, 131929), (188, 112280), (224, 94235), (235, 89824), (280, 75388), (329, 64160), (376, 56140), (401, 52640), (470, 44912), (560, 37694), (658, 32080), (752, 28070), (802, 26320), (940, 22456), (1120, 18847), (1316, 16040), (1504, 14035), (1604, 13160), (1645, 12832), (1880, 11228), (2005, 10528), (2632, 8020), (2807, 7520), (3208, 6580), (3290, 6416), (3760, 5614), (4010, 5264)]