428639991

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1\times {\mathrm{1583}}^1$

素因数の和:1783

約数の個数: 32

約数和(自身を含む): 632282112

約数和(自身を除く): 203642121

約数列:

[1, 3, 13, 39, 53, 131, 159, 393, 689, 1583, 1703, 2067, 4749, 5109, 6943, 20579, 20829, 61737, 83899, 90259, 207373, 251697, 270777, 622119, 1090687, 2695849, 3272061, 8087547, 10990769, 32972307, 142879997, 428639991]

約数ペア:

[(1, 428639991), (3, 142879997), (13, 32972307), (39, 10990769), (53, 8087547), (131, 3272061), (159, 2695849), (393, 1090687), (689, 622119), (1583, 270777), (1703, 251697), (2067, 207373), (4749, 90259), (5109, 83899), (6943, 61737), (20579, 20829)]