19310864

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{191}}^1$

素因数の和:359

約数の個数: 40

約数和(自身を含む): 38568960

約数和(自身を除く): 19258096

約数列:

[1, 2, 4, 8, 16, 71, 89, 142, 178, 191, 284, 356, 382, 568, 712, 764, 1136, 1424, 1528, 3056, 6319, 12638, 13561, 16999, 25276, 27122, 33998, 50552, 54244, 67996, 101104, 108488, 135992, 216976, 271984, 1206929, 2413858, 4827716, 9655432, 19310864]

約数ペア:

[(1, 19310864), (2, 9655432), (4, 4827716), (8, 2413858), (16, 1206929), (71, 271984), (89, 216976), (142, 135992), (178, 108488), (191, 101104), (284, 67996), (356, 54244), (382, 50552), (568, 33998), (712, 27122), (764, 25276), (1136, 16999), (1424, 13561), (1528, 12638), (3056, 6319)]