20543295

素因数分解:

$3^1\times 5^1\times {\mathrm{73}}^2\times {\mathrm{257}}^1$

素因数の和:411

約数の個数: 24

約数和(自身を含む): 33455376

約数和(自身を除く): 12912081

約数列:

[1, 3, 5, 15, 73, 219, 257, 365, 771, 1095, 1285, 3855, 5329, 15987, 18761, 26645, 56283, 79935, 93805, 281415, 1369553, 4108659, 6847765, 20543295]

約数ペア:

[(1, 20543295), (3, 6847765), (5, 4108659), (15, 1369553), (73, 281415), (219, 93805), (257, 79935), (365, 56283), (771, 26645), (1095, 18761), (1285, 15987), (3855, 5329)]