19991567199

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{2536679}}^1$

素因数の和:2536790

約数の個数: 16

約数和(自身を含む): 27761425920

約数和(自身を除く): 7769858721

約数列:

[1, 3, 37, 71, 111, 213, 2627, 7881, 2536679, 7610037, 93857123, 180104209, 281571369, 540312627, 6663855733, 19991567199]

約数ペア:

[(1, 19991567199), (3, 6663855733), (37, 540312627), (71, 281571369), (111, 180104209), (213, 93857123), (2627, 7610037), (7881, 2536679)]