20871536

素因数分解:

$2^4\times 7^1\times {\mathrm{331}}^1\times {\mathrm{563}}^1$

素因数の和:909

約数の個数: 40

約数和(自身を含む): 46437504

約数和(自身を除く): 25565968

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 331, 563, 662, 1126, 1324, 2252, 2317, 2648, 3941, 4504, 4634, 5296, 7882, 9008, 9268, 15764, 18536, 31528, 37072, 63056, 186353, 372706, 745412, 1304471, 1490824, 2608942, 2981648, 5217884, 10435768, 20871536]

約数ペア:

[(1, 20871536), (2, 10435768), (4, 5217884), (7, 2981648), (8, 2608942), (14, 1490824), (16, 1304471), (28, 745412), (56, 372706), (112, 186353), (331, 63056), (563, 37072), (662, 31528), (1126, 18536), (1324, 15764), (2252, 9268), (2317, 9008), (2648, 7882), (3941, 5296), (4504, 4634)]