21066340

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{307}}^1$

素因数の和:436

約数の個数: 48

約数和(自身を含む): 45948672

約数和(自身を除く): 24882332

約数列:

[1, 2, 4, 5, 10, 20, 47, 73, 94, 146, 188, 235, 292, 307, 365, 470, 614, 730, 940, 1228, 1460, 1535, 3070, 3431, 6140, 6862, 13724, 14429, 17155, 22411, 28858, 34310, 44822, 57716, 68620, 72145, 89644, 112055, 144290, 224110, 288580, 448220, 1053317, 2106634, 4213268, 5266585, 10533170, 21066340]

約数ペア:

[(1, 21066340), (2, 10533170), (4, 5266585), (5, 4213268), (10, 2106634), (20, 1053317), (47, 448220), (73, 288580), (94, 224110), (146, 144290), (188, 112055), (235, 89644), (292, 72145), (307, 68620), (365, 57716), (470, 44822), (614, 34310), (730, 28858), (940, 22411), (1228, 17155), (1460, 14429), (1535, 13724), (3070, 6862), (3431, 6140)]