21280150881

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2083}}^1\times {\mathrm{2789}}^1$

素因数の和:4926

約数の個数: 48

約数和(自身を含む): 34467526080

約数和(自身を除く): 13187375199

約数列:

[1, 3, 9, 11, 33, 37, 99, 111, 333, 407, 1221, 2083, 2789, 3663, 6249, 8367, 18747, 22913, 25101, 30679, 68739, 77071, 92037, 103193, 206217, 231213, 276111, 309579, 693639, 847781, 928737, 1135123, 2543343, 3405369, 5809487, 7630029, 10216107, 17428461, 52285383, 63904357, 191713071, 214951019, 575139213, 644853057, 1934559171, 2364461209, 7093383627, 21280150881]

約数ペア:

[(1, 21280150881), (3, 7093383627), (9, 2364461209), (11, 1934559171), (33, 644853057), (37, 575139213), (99, 214951019), (111, 191713071), (333, 63904357), (407, 52285383), (1221, 17428461), (2083, 10216107), (2789, 7630029), (3663, 5809487), (6249, 3405369), (8367, 2543343), (18747, 1135123), (22913, 928737), (25101, 847781), (30679, 693639), (68739, 309579), (77071, 276111), (92037, 231213), (103193, 206217)]