20285456

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{127}}^1\times {\mathrm{149}}^1$

素因数の和:351

約数の個数: 40

約数和(自身を含む): 40473600

約数和(自身を除く): 20188144

約数列:

[1, 2, 4, 8, 16, 67, 127, 134, 149, 254, 268, 298, 508, 536, 596, 1016, 1072, 1192, 2032, 2384, 8509, 9983, 17018, 18923, 19966, 34036, 37846, 39932, 68072, 75692, 79864, 136144, 151384, 159728, 302768, 1267841, 2535682, 5071364, 10142728, 20285456]

約数ペア:

[(1, 20285456), (2, 10142728), (4, 5071364), (8, 2535682), (16, 1267841), (67, 302768), (127, 159728), (134, 151384), (149, 136144), (254, 79864), (268, 75692), (298, 68072), (508, 39932), (536, 37846), (596, 34036), (1016, 19966), (1072, 18923), (1192, 17018), (2032, 9983), (2384, 8509)]