19539680

素因数分解:

$2^5\times 5^1\times {\mathrm{97}}^1\times {\mathrm{1259}}^1$

素因数の和:1371

約数の個数: 48

約数和(自身を含む): 46675440

約数和(自身を除く): 27135760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 97, 160, 194, 388, 485, 776, 970, 1259, 1552, 1940, 2518, 3104, 3880, 5036, 6295, 7760, 10072, 12590, 15520, 20144, 25180, 40288, 50360, 100720, 122123, 201440, 244246, 488492, 610615, 976984, 1221230, 1953968, 2442460, 3907936, 4884920, 9769840, 19539680]

約数ペア:

[(1, 19539680), (2, 9769840), (4, 4884920), (5, 3907936), (8, 2442460), (10, 1953968), (16, 1221230), (20, 976984), (32, 610615), (40, 488492), (80, 244246), (97, 201440), (160, 122123), (194, 100720), (388, 50360), (485, 40288), (776, 25180), (970, 20144), (1259, 15520), (1552, 12590), (1940, 10072), (2518, 7760), (3104, 6295), (3880, 5036)]