21380458833

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^2\times {\mathrm{1459}}^1$

素因数の和:1643

約数の個数: 72

約数和(自身を含む): 34936106400

約数和(自身を除く): 13555647567

約数列:

[1, 3, 9, 17, 19, 51, 57, 71, 153, 171, 213, 323, 639, 969, 1207, 1349, 1459, 2907, 3621, 4047, 4377, 5041, 10863, 12141, 13131, 15123, 22933, 24803, 27721, 45369, 68799, 74409, 83163, 85697, 95779, 103589, 206397, 223227, 249489, 257091, 287337, 310767, 471257, 771273, 862011, 932301, 1413771, 1628243, 1761013, 1968191, 4241313, 4884729, 5283039, 5904573, 7354819, 14654187, 15849117, 17713719, 22064457, 33459247, 66193371, 100377741, 125031923, 139741561, 301133223, 375095769, 419224683, 1125287307, 1257674049, 2375606537, 7126819611, 21380458833]

約数ペア:

[(1, 21380458833), (3, 7126819611), (9, 2375606537), (17, 1257674049), (19, 1125287307), (51, 419224683), (57, 375095769), (71, 301133223), (153, 139741561), (171, 125031923), (213, 100377741), (323, 66193371), (639, 33459247), (969, 22064457), (1207, 17713719), (1349, 15849117), (1459, 14654187), (2907, 7354819), (3621, 5904573), (4047, 5283039), (4377, 4884729), (5041, 4241313), (10863, 1968191), (12141, 1761013), (13131, 1628243), (15123, 1413771), (22933, 932301), (24803, 862011), (27721, 771273), (45369, 471257), (68799, 310767), (74409, 287337), (83163, 257091), (85697, 249489), (95779, 223227), (103589, 206397)]