221785928

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{304651}}^1$

素因数の和:304677

約数の個数: 32

約数和(自身を含む): 511815360

約数和(自身を除く): 290029432

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 304651, 609302, 1218604, 2132557, 2437208, 3960463, 4265114, 7920926, 8530228, 15841852, 17060456, 27723241, 31683704, 55446482, 110892964, 221785928]

約数ペア:

[(1, 221785928), (2, 110892964), (4, 55446482), (7, 31683704), (8, 27723241), (13, 17060456), (14, 15841852), (26, 8530228), (28, 7920926), (52, 4265114), (56, 3960463), (91, 2437208), (104, 2132557), (182, 1218604), (364, 609302), (728, 304651)]