21350840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{76253}}^1$

素因数の和:76271

約数の個数: 32

約数和(自身を含む): 54902880

約数和(自身を除く): 33552040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 76253, 152506, 305012, 381265, 533771, 610024, 762530, 1067542, 1525060, 2135084, 2668855, 3050120, 4270168, 5337710, 10675420, 21350840]

約数ペア:

[(1, 21350840), (2, 10675420), (4, 5337710), (5, 4270168), (7, 3050120), (8, 2668855), (10, 2135084), (14, 1525060), (20, 1067542), (28, 762530), (35, 610024), (40, 533771), (56, 381265), (70, 305012), (140, 152506), (280, 76253)]