20054223

素因数分解:

$3^4\times 7^1\times {\mathrm{113}}^1\times {\mathrm{313}}^1$

素因数の和:445

約数の個数: 40

約数和(自身を含む): 34650528

約数和(自身を除く): 14596305

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 113, 189, 313, 339, 567, 791, 939, 1017, 2191, 2373, 2817, 3051, 6573, 7119, 8451, 9153, 19719, 21357, 25353, 35369, 59157, 64071, 106107, 177471, 247583, 318321, 742749, 954963, 2228247, 2864889, 6684741, 20054223]

約数ペア:

[(1, 20054223), (3, 6684741), (7, 2864889), (9, 2228247), (21, 954963), (27, 742749), (63, 318321), (81, 247583), (113, 177471), (189, 106107), (313, 64071), (339, 59157), (567, 35369), (791, 25353), (939, 21357), (1017, 19719), (2191, 9153), (2373, 8451), (2817, 7119), (3051, 6573)]