1728140

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1217}}^1$

素因数の和:1297

約数の個数: 24

約数和(自身を含む): 3683232

約数和(自身を除く): 1955092

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1217, 1420, 2434, 4868, 6085, 12170, 24340, 86407, 172814, 345628, 432035, 864070, 1728140]

約数ペア:

[(1, 1728140), (2, 864070), (4, 432035), (5, 345628), (10, 172814), (20, 86407), (71, 24340), (142, 12170), (284, 6085), (355, 4868), (710, 2434), (1217, 1420)]