19798504

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{113}}^1\times {\mathrm{181}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 41392260

約数和(自身を除く): 21593756

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 113, 121, 181, 226, 242, 362, 452, 484, 724, 904, 968, 1243, 1448, 1991, 2486, 3982, 4972, 7964, 9944, 13673, 15928, 20453, 21901, 27346, 40906, 43802, 54692, 81812, 87604, 109384, 163624, 175208, 224983, 449966, 899932, 1799864, 2474813, 4949626, 9899252, 19798504]

約数ペア:

[(1, 19798504), (2, 9899252), (4, 4949626), (8, 2474813), (11, 1799864), (22, 899932), (44, 449966), (88, 224983), (113, 175208), (121, 163624), (181, 109384), (226, 87604), (242, 81812), (362, 54692), (452, 43802), (484, 40906), (724, 27346), (904, 21901), (968, 20453), (1243, 15928), (1448, 13673), (1991, 9944), (2486, 7964), (3982, 4972)]