16986040

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{5981}}^1$

素因数の和:6063

約数の個数: 32

約数和(自身を含む): 38763360

約数和(自身を除く): 21777320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 5981, 11962, 23924, 29905, 47848, 59810, 119620, 239240, 424651, 849302, 1698604, 2123255, 3397208, 4246510, 8493020, 16986040]

約数ペア:

[(1, 16986040), (2, 8493020), (4, 4246510), (5, 3397208), (8, 2123255), (10, 1698604), (20, 849302), (40, 424651), (71, 239240), (142, 119620), (284, 59810), (355, 47848), (568, 29905), (710, 23924), (1420, 11962), (2840, 5981)]