20064520

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{353}}^1$

素因数の和:407

約数の個数: 96

約数和(自身を含む): 54480600

約数和(自身を除く): 34416080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 49, 56, 58, 70, 98, 116, 140, 145, 196, 203, 232, 245, 280, 290, 353, 392, 406, 490, 580, 706, 812, 980, 1015, 1160, 1412, 1421, 1624, 1765, 1960, 2030, 2471, 2824, 2842, 3530, 4060, 4942, 5684, 7060, 7105, 8120, 9884, 10237, 11368, 12355, 14120, 14210, 17297, 19768, 20474, 24710, 28420, 34594, 40948, 49420, 51185, 56840, 69188, 71659, 81896, 86485, 98840, 102370, 138376, 143318, 172970, 204740, 286636, 345940, 358295, 409480, 501613, 573272, 691880, 716590, 1003226, 1433180, 2006452, 2508065, 2866360, 4012904, 5016130, 10032260, 20064520]

約数ペア:

[(1, 20064520), (2, 10032260), (4, 5016130), (5, 4012904), (7, 2866360), (8, 2508065), (10, 2006452), (14, 1433180), (20, 1003226), (28, 716590), (29, 691880), (35, 573272), (40, 501613), (49, 409480), (56, 358295), (58, 345940), (70, 286636), (98, 204740), (116, 172970), (140, 143318), (145, 138376), (196, 102370), (203, 98840), (232, 86485), (245, 81896), (280, 71659), (290, 69188), (353, 56840), (392, 51185), (406, 49420), (490, 40948), (580, 34594), (706, 28420), (812, 24710), (980, 20474), (1015, 19768), (1160, 17297), (1412, 14210), (1421, 14120), (1624, 12355), (1765, 11368), (1960, 10237), (2030, 9884), (2471, 8120), (2824, 7105), (2842, 7060), (3530, 5684), (4060, 4942)]