21038390520

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{353}}^1\times {\mathrm{70951}}^1$

素因数の和:71325

約数の個数: 128

約数和(自身を含む): 72336983040

約数和(自身を除く): 51298592520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 353, 420, 706, 840, 1059, 1412, 1765, 2118, 2471, 2824, 3530, 4236, 4942, 5295, 7060, 7413, 8472, 9884, 10590, 12355, 14120, 14826, 19768, 21180, 24710, 29652, 37065, 42360, 49420, 59304, 70951, 74130, 98840, 141902, 148260, 212853, 283804, 296520, 354755, 425706, 496657, 567608, 709510, 851412, 993314, 1064265, 1419020, 1489971, 1702824, 1986628, 2128530, 2483285, 2838040, 2979942, 3973256, 4257060, 4966570, 5959884, 7449855, 8514120, 9933140, 11919768, 14899710, 19866280, 25045703, 29799420, 50091406, 59598840, 75137109, 100182812, 125228515, 150274218, 175319921, 200365624, 250457030, 300548436, 350639842, 375685545, 500914060, 525959763, 601096872, 701279684, 751371090, 876599605, 1001828120, 1051919526, 1402559368, 1502742180, 1753199210, 2103839052, 2629798815, 3005484360, 3506398420, 4207678104, 5259597630, 7012796840, 10519195260, 21038390520]

約数ペア:

[(1, 21038390520), (2, 10519195260), (3, 7012796840), (4, 5259597630), (5, 4207678104), (6, 3506398420), (7, 3005484360), (8, 2629798815), (10, 2103839052), (12, 1753199210), (14, 1502742180), (15, 1402559368), (20, 1051919526), (21, 1001828120), (24, 876599605), (28, 751371090), (30, 701279684), (35, 601096872), (40, 525959763), (42, 500914060), (56, 375685545), (60, 350639842), (70, 300548436), (84, 250457030), (105, 200365624), (120, 175319921), (140, 150274218), (168, 125228515), (210, 100182812), (280, 75137109), (353, 59598840), (420, 50091406), (706, 29799420), (840, 25045703), (1059, 19866280), (1412, 14899710), (1765, 11919768), (2118, 9933140), (2471, 8514120), (2824, 7449855), (3530, 5959884), (4236, 4966570), (4942, 4257060), (5295, 3973256), (7060, 2979942), (7413, 2838040), (8472, 2483285), (9884, 2128530), (10590, 1986628), (12355, 1702824), (14120, 1489971), (14826, 1419020), (19768, 1064265), (21180, 993314), (24710, 851412), (29652, 709510), (37065, 567608), (42360, 496657), (49420, 425706), (59304, 354755), (70951, 296520), (74130, 283804), (98840, 212853), (141902, 148260)]