20102931

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{263}}^1$

素因数の和:440

約数の個数: 32

約数和(自身を含む): 31680000

約数和(自身を除く): 11577069

約数列:

[1, 3, 9, 19, 27, 57, 149, 171, 263, 447, 513, 789, 1341, 2367, 2831, 4023, 4997, 7101, 8493, 14991, 25479, 39187, 44973, 76437, 117561, 134919, 352683, 744553, 1058049, 2233659, 6700977, 20102931]

約数ペア:

[(1, 20102931), (3, 6700977), (9, 2233659), (19, 1058049), (27, 744553), (57, 352683), (149, 134919), (171, 117561), (263, 76437), (447, 44973), (513, 39187), (789, 25479), (1341, 14991), (2367, 8493), (2831, 7101), (4023, 4997)]