638963752

素因数分解:

$2^3\times 7^1\times {\mathrm{89}}^1\times {\mathrm{128203}}^1$

素因数の和:128305

約数の個数: 32

約数和(自身を含む): 1384603200

約数和(自身を除く): 745639448

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 89, 178, 356, 623, 712, 1246, 2492, 4984, 128203, 256406, 512812, 897421, 1025624, 1794842, 3589684, 7179368, 11410067, 22820134, 45640268, 79870469, 91280536, 159740938, 319481876, 638963752]

約数ペア:

[(1, 638963752), (2, 319481876), (4, 159740938), (7, 91280536), (8, 79870469), (14, 45640268), (28, 22820134), (56, 11410067), (89, 7179368), (178, 3589684), (356, 1794842), (623, 1025624), (712, 897421), (1246, 512812), (2492, 256406), (4984, 128203)]