21778834

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{227}}^1$

素因数の和:343

約数の個数: 48

約数和(自身を含む): 42107040

約数和(自身を除く): 20328206

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 89, 98, 154, 178, 227, 454, 539, 623, 979, 1078, 1246, 1589, 1958, 2497, 3178, 4361, 4994, 6853, 8722, 11123, 13706, 17479, 20203, 22246, 34958, 40406, 47971, 95942, 122353, 141421, 222233, 244706, 282842, 444466, 989947, 1555631, 1979894, 3111262, 10889417, 21778834]

約数ペア:

[(1, 21778834), (2, 10889417), (7, 3111262), (11, 1979894), (14, 1555631), (22, 989947), (49, 444466), (77, 282842), (89, 244706), (98, 222233), (154, 141421), (178, 122353), (227, 95942), (454, 47971), (539, 40406), (623, 34958), (979, 22246), (1078, 20203), (1246, 17479), (1589, 13706), (1958, 11123), (2497, 8722), (3178, 6853), (4361, 4994)]