215770191

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{353}}^1\times {\mathrm{2239}}^1$

素因数の和:2615

約数の個数: 32

約数和(自身を含む): 355246080

約数和(自身を除く): 139475889

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 353, 1059, 2239, 2471, 4589, 6717, 7413, 13767, 15673, 29107, 32123, 47019, 87321, 96369, 203749, 611247, 790367, 2371101, 5532569, 10274771, 16597707, 30824313, 71923397, 215770191]

約数ペア:

[(1, 215770191), (3, 71923397), (7, 30824313), (13, 16597707), (21, 10274771), (39, 5532569), (91, 2371101), (273, 790367), (353, 611247), (1059, 203749), (2239, 96369), (2471, 87321), (4589, 47019), (6717, 32123), (7413, 29107), (13767, 15673)]