19540456

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{97}}^1\times {\mathrm{149}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 40351500

約数和(自身を除く): 20811044

約数列:

[1, 2, 4, 8, 13, 26, 52, 97, 104, 149, 169, 194, 298, 338, 388, 596, 676, 776, 1192, 1261, 1352, 1937, 2522, 3874, 5044, 7748, 10088, 14453, 15496, 16393, 25181, 28906, 32786, 50362, 57812, 65572, 100724, 115624, 131144, 187889, 201448, 375778, 751556, 1503112, 2442557, 4885114, 9770228, 19540456]

約数ペア:

[(1, 19540456), (2, 9770228), (4, 4885114), (8, 2442557), (13, 1503112), (26, 751556), (52, 375778), (97, 201448), (104, 187889), (149, 131144), (169, 115624), (194, 100724), (298, 65572), (338, 57812), (388, 50362), (596, 32786), (676, 28906), (776, 25181), (1192, 16393), (1261, 15496), (1352, 14453), (1937, 10088), (2522, 7748), (3874, 5044)]