21475335

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{227}}^1$

素因数の和:312

約数の個数: 64

約数和(自身を含む): 42550272

約数和(自身を除く): 21074937

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 53, 85, 105, 119, 159, 227, 255, 265, 357, 371, 595, 681, 795, 901, 1113, 1135, 1589, 1785, 1855, 2703, 3405, 3859, 4505, 4767, 5565, 6307, 7945, 11577, 12031, 13515, 18921, 19295, 23835, 27013, 31535, 36093, 57885, 60155, 81039, 84217, 94605, 135065, 180465, 204527, 252651, 405195, 421085, 613581, 1022635, 1263255, 1431689, 3067905, 4295067, 7158445, 21475335]

約数ペア:

[(1, 21475335), (3, 7158445), (5, 4295067), (7, 3067905), (15, 1431689), (17, 1263255), (21, 1022635), (35, 613581), (51, 421085), (53, 405195), (85, 252651), (105, 204527), (119, 180465), (159, 135065), (227, 94605), (255, 84217), (265, 81039), (357, 60155), (371, 57885), (595, 36093), (681, 31535), (795, 27013), (901, 23835), (1113, 19295), (1135, 18921), (1589, 13515), (1785, 12031), (1855, 11577), (2703, 7945), (3405, 6307), (3859, 5565), (4505, 4767)]