21224560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{251}}^1$

素因数の和:422

約数の個数: 80

約数和(自身を含む): 56996352

約数和(自身を除く): 35771792

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 151, 251, 280, 302, 502, 560, 604, 755, 1004, 1057, 1208, 1255, 1510, 1757, 2008, 2114, 2416, 2510, 3020, 3514, 4016, 4228, 5020, 5285, 6040, 7028, 8456, 8785, 10040, 10570, 12080, 14056, 16912, 17570, 20080, 21140, 28112, 35140, 37901, 42280, 70280, 75802, 84560, 140560, 151604, 189505, 265307, 303208, 379010, 530614, 606416, 758020, 1061228, 1326535, 1516040, 2122456, 2653070, 3032080, 4244912, 5306140, 10612280, 21224560]

約数ペア:

[(1, 21224560), (2, 10612280), (4, 5306140), (5, 4244912), (7, 3032080), (8, 2653070), (10, 2122456), (14, 1516040), (16, 1326535), (20, 1061228), (28, 758020), (35, 606416), (40, 530614), (56, 379010), (70, 303208), (80, 265307), (112, 189505), (140, 151604), (151, 140560), (251, 84560), (280, 75802), (302, 70280), (502, 42280), (560, 37901), (604, 35140), (755, 28112), (1004, 21140), (1057, 20080), (1208, 17570), (1255, 16912), (1510, 14056), (1757, 12080), (2008, 10570), (2114, 10040), (2416, 8785), (2510, 8456), (3020, 7028), (3514, 6040), (4016, 5285), (4228, 5020)]