21364840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{76303}}^1$

素因数の和:76321

約数の個数: 32

約数和(自身を含む): 54938880

約数和(自身を除く): 33574040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 76303, 152606, 305212, 381515, 534121, 610424, 763030, 1068242, 1526060, 2136484, 2670605, 3052120, 4272968, 5341210, 10682420, 21364840]

約数ペア:

[(1, 21364840), (2, 10682420), (4, 5341210), (5, 4272968), (7, 3052120), (8, 2670605), (10, 2136484), (14, 1526060), (20, 1068242), (28, 763030), (35, 610424), (40, 534121), (56, 381515), (70, 305212), (140, 152606), (280, 76303)]