20399704

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{2687}}^1$

素因数の和:2779

約数の個数: 32

約数和(自身を含む): 41771520

約数和(自身を除く): 21371816

約数列:

[1, 2, 4, 8, 13, 26, 52, 73, 104, 146, 292, 584, 949, 1898, 2687, 3796, 5374, 7592, 10748, 21496, 34931, 69862, 139724, 196151, 279448, 392302, 784604, 1569208, 2549963, 5099926, 10199852, 20399704]

約数ペア:

[(1, 20399704), (2, 10199852), (4, 5099926), (8, 2549963), (13, 1569208), (26, 784604), (52, 392302), (73, 279448), (104, 196151), (146, 139724), (292, 69862), (584, 34931), (949, 21496), (1898, 10748), (2687, 7592), (3796, 5374)]