18100719

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1$

素因数の和:221

約数の個数: 64

約数和(自身を含む): 33868800

約数和(自身を除く): 15768081

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 53, 63, 91, 117, 139, 159, 189, 273, 351, 371, 417, 477, 689, 819, 973, 1113, 1251, 1431, 1807, 2067, 2457, 2919, 3339, 3753, 4823, 5421, 6201, 7367, 8757, 10017, 12649, 14469, 16263, 18603, 22101, 26271, 37947, 43407, 48789, 51569, 66303, 95771, 113841, 130221, 154707, 198909, 287313, 341523, 464121, 670397, 861939, 1392363, 2011191, 2585817, 6033573, 18100719]

約数ペア:

[(1, 18100719), (3, 6033573), (7, 2585817), (9, 2011191), (13, 1392363), (21, 861939), (27, 670397), (39, 464121), (53, 341523), (63, 287313), (91, 198909), (117, 154707), (139, 130221), (159, 113841), (189, 95771), (273, 66303), (351, 51569), (371, 48789), (417, 43407), (477, 37947), (689, 26271), (819, 22101), (973, 18603), (1113, 16263), (1251, 14469), (1431, 12649), (1807, 10017), (2067, 8757), (2457, 7367), (2919, 6201), (3339, 5421), (3753, 4823)]