81691460

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{2477}}^1$

素因数の和:2600

約数の個数: 48

約数和(自身を含む): 183590064

約数和(自身を除く): 101898604

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 97, 170, 194, 340, 388, 485, 970, 1649, 1940, 2477, 3298, 4954, 6596, 8245, 9908, 12385, 16490, 24770, 32980, 42109, 49540, 84218, 168436, 210545, 240269, 421090, 480538, 842180, 961076, 1201345, 2402690, 4084573, 4805380, 8169146, 16338292, 20422865, 40845730, 81691460]

約数ペア:

[(1, 81691460), (2, 40845730), (4, 20422865), (5, 16338292), (10, 8169146), (17, 4805380), (20, 4084573), (34, 2402690), (68, 1201345), (85, 961076), (97, 842180), (170, 480538), (194, 421090), (340, 240269), (388, 210545), (485, 168436), (970, 84218), (1649, 49540), (1940, 42109), (2477, 32980), (3298, 24770), (4954, 16490), (6596, 12385), (8245, 9908)]