20702977281

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{840457}}^1$

素因数の和:840510

約数の個数: 48

約数和(自身を含む): 37760097024

約数和(自身を除く): 17057119743

約数列:

[1, 3, 7, 9, 17, 21, 23, 51, 63, 69, 119, 153, 161, 207, 357, 391, 483, 1071, 1173, 1449, 2737, 3519, 8211, 24633, 840457, 2521371, 5883199, 7564113, 14287769, 17649597, 19330511, 42863307, 52948791, 57991533, 100014383, 128589921, 135313577, 173974599, 300043149, 328618687, 405940731, 900129447, 985856061, 1217822193, 2300330809, 2957568183, 6900992427, 20702977281]

約数ペア:

[(1, 20702977281), (3, 6900992427), (7, 2957568183), (9, 2300330809), (17, 1217822193), (21, 985856061), (23, 900129447), (51, 405940731), (63, 328618687), (69, 300043149), (119, 173974599), (153, 135313577), (161, 128589921), (207, 100014383), (357, 57991533), (391, 52948791), (483, 42863307), (1071, 19330511), (1173, 17649597), (1449, 14287769), (2737, 7564113), (3519, 5883199), (8211, 2521371), (24633, 840457)]