81968185

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{2141}}^1$

素因数の和:2209

約数の個数: 32

約数和(自身を含む): 115153920

約数和(自身を除く): 33185735

約数列:

[1, 5, 13, 19, 31, 65, 95, 155, 247, 403, 589, 1235, 2015, 2141, 2945, 7657, 10705, 27833, 38285, 40679, 66371, 139165, 203395, 331855, 528827, 862823, 1261049, 2644135, 4314115, 6305245, 16393637, 81968185]

約数ペア:

[(1, 81968185), (5, 16393637), (13, 6305245), (19, 4314115), (31, 2644135), (65, 1261049), (95, 862823), (155, 528827), (247, 331855), (403, 203395), (589, 139165), (1235, 66371), (2015, 40679), (2141, 38285), (2945, 27833), (7657, 10705)]