21915208

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{479}}^1$

素因数の和:554

約数の個数: 64

約数和(自身を含む): 50688000

約数和(自身を除く): 28772792

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 43, 56, 76, 86, 133, 152, 172, 266, 301, 344, 479, 532, 602, 817, 958, 1064, 1204, 1634, 1916, 2408, 3268, 3353, 3832, 5719, 6536, 6706, 9101, 11438, 13412, 18202, 20597, 22876, 26824, 36404, 41194, 45752, 63707, 72808, 82388, 127414, 144179, 164776, 254828, 288358, 391343, 509656, 576716, 782686, 1153432, 1565372, 2739401, 3130744, 5478802, 10957604, 21915208]

約数ペア:

[(1, 21915208), (2, 10957604), (4, 5478802), (7, 3130744), (8, 2739401), (14, 1565372), (19, 1153432), (28, 782686), (38, 576716), (43, 509656), (56, 391343), (76, 288358), (86, 254828), (133, 164776), (152, 144179), (172, 127414), (266, 82388), (301, 72808), (344, 63707), (479, 45752), (532, 41194), (602, 36404), (817, 26824), (958, 22876), (1064, 20597), (1204, 18202), (1634, 13412), (1916, 11438), (2408, 9101), (3268, 6706), (3353, 6536), (3832, 5719)]