87897880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{313921}}^1$

素因数の和:313939

約数の個数: 32

約数和(自身を含む): 226023840

約数和(自身を除く): 138125960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 313921, 627842, 1255684, 1569605, 2197447, 2511368, 3139210, 4394894, 6278420, 8789788, 10987235, 12556840, 17579576, 21974470, 43948940, 87897880]

約数ペア:

[(1, 87897880), (2, 43948940), (4, 21974470), (5, 17579576), (7, 12556840), (8, 10987235), (10, 8789788), (14, 6278420), (20, 4394894), (28, 3139210), (35, 2511368), (40, 2197447), (56, 1569605), (70, 1255684), (140, 627842), (280, 313921)]