81299216

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{64319}}^1$

素因数の和:64406

約数の個数: 20

約数和(自身を含む): 159513600

約数和(自身を除く): 78214384

約数列:

[1, 2, 4, 8, 16, 79, 158, 316, 632, 1264, 64319, 128638, 257276, 514552, 1029104, 5081201, 10162402, 20324804, 40649608, 81299216]

約数ペア:

[(1, 81299216), (2, 40649608), (4, 20324804), (8, 10162402), (16, 5081201), (79, 1029104), (158, 514552), (316, 257276), (632, 128638), (1264, 64319)]