639969328

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{467}}^1\times {\mathrm{2089}}^1$

素因数の和:2605

約数の個数: 40

約数和(自身を含む): 1273512240

約数和(自身を除く): 633542912

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 467, 656, 934, 1868, 2089, 3736, 4178, 7472, 8356, 16712, 19147, 33424, 38294, 76588, 85649, 153176, 171298, 306352, 342596, 685192, 975563, 1370384, 1951126, 3902252, 7804504, 15609008, 39998083, 79996166, 159992332, 319984664, 639969328]

約数ペア:

[(1, 639969328), (2, 319984664), (4, 159992332), (8, 79996166), (16, 39998083), (41, 15609008), (82, 7804504), (164, 3902252), (328, 1951126), (467, 1370384), (656, 975563), (934, 685192), (1868, 342596), (2089, 306352), (3736, 171298), (4178, 153176), (7472, 85649), (8356, 76588), (16712, 38294), (19147, 33424)]