30813880

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{2477}}^1$

素因数の和:2799

約数の個数: 32

約数和(自身を含む): 69582240

約数和(自身を除く): 38768360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1555, 2477, 2488, 3110, 4954, 6220, 9908, 12385, 12440, 19816, 24770, 49540, 99080, 770347, 1540694, 3081388, 3851735, 6162776, 7703470, 15406940, 30813880]

約数ペア:

[(1, 30813880), (2, 15406940), (4, 7703470), (5, 6162776), (8, 3851735), (10, 3081388), (20, 1540694), (40, 770347), (311, 99080), (622, 49540), (1244, 24770), (1555, 19816), (2477, 12440), (2488, 12385), (3110, 9908), (4954, 6220)]