66897880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{238921}}^1$

素因数の和:238939

約数の個数: 32

約数和(自身を含む): 172023840

約数和(自身を除く): 105125960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 238921, 477842, 955684, 1194605, 1672447, 1911368, 2389210, 3344894, 4778420, 6689788, 8362235, 9556840, 13379576, 16724470, 33448940, 66897880]

約数ペア:

[(1, 66897880), (2, 33448940), (4, 16724470), (5, 13379576), (7, 9556840), (8, 8362235), (10, 6689788), (14, 4778420), (20, 3344894), (28, 2389210), (35, 1911368), (40, 1672447), (56, 1194605), (70, 955684), (140, 477842), (280, 238921)]