20218072808

素因数分解:

$2^3\times {\mathrm{257}}^1\times {\mathrm{991}}^1\times {\mathrm{9923}}^1$

素因数の和:11177

約数の個数: 32

約数和(自身を含む): 38098632960

約数和(自身を除く): 17880560152

約数列:

[1, 2, 4, 8, 257, 514, 991, 1028, 1982, 2056, 3964, 7928, 9923, 19846, 39692, 79384, 254687, 509374, 1018748, 2037496, 2550211, 5100422, 9833693, 10200844, 19667386, 20401688, 39334772, 78669544, 2527259101, 5054518202, 10109036404, 20218072808]

約数ペア:

[(1, 20218072808), (2, 10109036404), (4, 5054518202), (8, 2527259101), (257, 78669544), (514, 39334772), (991, 20401688), (1028, 19667386), (1982, 10200844), (2056, 9833693), (3964, 5100422), (7928, 2550211), (9923, 2037496), (19846, 1018748), (39692, 509374), (79384, 254687)]