21806246

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:189

約数の個数: 64

約数和(自身を含む): 43338240

約数和(自身を除く): 21531994

約数列:

[1, 2, 7, 11, 14, 22, 37, 43, 74, 77, 86, 89, 154, 178, 259, 301, 407, 473, 518, 602, 623, 814, 946, 979, 1246, 1591, 1958, 2849, 3182, 3293, 3311, 3827, 5698, 6586, 6622, 6853, 7654, 11137, 13706, 17501, 22274, 23051, 26789, 35002, 36223, 42097, 46102, 53578, 72446, 84194, 122507, 141599, 245014, 253561, 283198, 294679, 507122, 589358, 991193, 1557589, 1982386, 3115178, 10903123, 21806246]

約数ペア:

[(1, 21806246), (2, 10903123), (7, 3115178), (11, 1982386), (14, 1557589), (22, 991193), (37, 589358), (43, 507122), (74, 294679), (77, 283198), (86, 253561), (89, 245014), (154, 141599), (178, 122507), (259, 84194), (301, 72446), (407, 53578), (473, 46102), (518, 42097), (602, 36223), (623, 35002), (814, 26789), (946, 23051), (979, 22274), (1246, 17501), (1591, 13706), (1958, 11137), (2849, 7654), (3182, 6853), (3293, 6622), (3311, 6586), (3827, 5698)]