28306280

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{9967}}^1$

素因数の和:10049

約数の個数: 32

約数和(自身を含む): 64592640

約数和(自身を除く): 36286360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 9967, 19934, 39868, 49835, 79736, 99670, 199340, 398680, 707657, 1415314, 2830628, 3538285, 5661256, 7076570, 14153140, 28306280]

約数ペア:

[(1, 28306280), (2, 14153140), (4, 7076570), (5, 5661256), (8, 3538285), (10, 2830628), (20, 1415314), (40, 707657), (71, 398680), (142, 199340), (284, 99670), (355, 79736), (568, 49835), (710, 39868), (1420, 19934), (2840, 9967)]