21000736484

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{571231}}^1$

素因数の和:571356

約数の個数: 48

約数和(自身を含む): 45680280576

約数和(自身を除く): 24679544092

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 101, 182, 202, 364, 404, 707, 1313, 1414, 2626, 2828, 5252, 9191, 18382, 36764, 571231, 1142462, 2284924, 3998617, 7426003, 7997234, 14852006, 15994468, 29704012, 51982021, 57694331, 103964042, 115388662, 207928084, 230777324, 403860317, 750026303, 807720634, 1500052606, 1615441268, 3000105212, 5250184121, 10500368242, 21000736484]

約数ペア:

[(1, 21000736484), (2, 10500368242), (4, 5250184121), (7, 3000105212), (13, 1615441268), (14, 1500052606), (26, 807720634), (28, 750026303), (52, 403860317), (91, 230777324), (101, 207928084), (182, 115388662), (202, 103964042), (364, 57694331), (404, 51982021), (707, 29704012), (1313, 15994468), (1414, 14852006), (2626, 7997234), (2828, 7426003), (5252, 3998617), (9191, 2284924), (18382, 1142462), (36764, 571231)]