19886384

素因数分解:

$2^4\times 7^1\times {\mathrm{277}}^1\times {\mathrm{641}}^1$

素因数の和:933

約数の個数: 40

約数和(自身を含む): 44262048

約数和(自身を除く): 24375664

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 277, 554, 641, 1108, 1282, 1939, 2216, 2564, 3878, 4432, 4487, 5128, 7756, 8974, 10256, 15512, 17948, 31024, 35896, 71792, 177557, 355114, 710228, 1242899, 1420456, 2485798, 2840912, 4971596, 9943192, 19886384]

約数ペア:

[(1, 19886384), (2, 9943192), (4, 4971596), (7, 2840912), (8, 2485798), (14, 1420456), (16, 1242899), (28, 710228), (56, 355114), (112, 177557), (277, 71792), (554, 35896), (641, 31024), (1108, 17948), (1282, 15512), (1939, 10256), (2216, 8974), (2564, 7756), (3878, 5128), (4432, 4487)]