20278468

素因数分解:

$2^2\times 7^1\times {\mathrm{461}}^1\times {\mathrm{1571}}^1$

素因数の和:2043

約数の個数: 24

約数和(自身を含む): 40670784

約数和(自身を除く): 20392316

約数列:

[1, 2, 4, 7, 14, 28, 461, 922, 1571, 1844, 3142, 3227, 6284, 6454, 10997, 12908, 21994, 43988, 724231, 1448462, 2896924, 5069617, 10139234, 20278468]

約数ペア:

[(1, 20278468), (2, 10139234), (4, 5069617), (7, 2896924), (14, 1448462), (28, 724231), (461, 43988), (922, 21994), (1571, 12908), (1844, 10997), (3142, 6454), (3227, 6284)]