21326270

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{613}}^1$

素因数の和:705

約数の個数: 48

約数和(自身を含む): 45357408

約数和(自身を除く): 24031138

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 71, 98, 142, 245, 355, 490, 497, 613, 710, 994, 1226, 2485, 3065, 3479, 4291, 4970, 6130, 6958, 8582, 17395, 21455, 30037, 34790, 42910, 43523, 60074, 87046, 150185, 217615, 300370, 304661, 435230, 609322, 1523305, 2132627, 3046610, 4265254, 10663135, 21326270]

約数ペア:

[(1, 21326270), (2, 10663135), (5, 4265254), (7, 3046610), (10, 2132627), (14, 1523305), (35, 609322), (49, 435230), (70, 304661), (71, 300370), (98, 217615), (142, 150185), (245, 87046), (355, 60074), (490, 43523), (497, 42910), (613, 34790), (710, 30037), (994, 21455), (1226, 17395), (2485, 8582), (3065, 6958), (3479, 6130), (4291, 4970)]