21479128

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{3643}}^1$

素因数の和:3727

約数の個数: 32

約数和(自身を含む): 44602560

約数和(自身を除く): 23123432

約数列:

[1, 2, 4, 8, 11, 22, 44, 67, 88, 134, 268, 536, 737, 1474, 2948, 3643, 5896, 7286, 14572, 29144, 40073, 80146, 160292, 244081, 320584, 488162, 976324, 1952648, 2684891, 5369782, 10739564, 21479128]

約数ペア:

[(1, 21479128), (2, 10739564), (4, 5369782), (8, 2684891), (11, 1952648), (22, 976324), (44, 488162), (67, 320584), (88, 244081), (134, 160292), (268, 80146), (536, 40073), (737, 29144), (1474, 14572), (2948, 7286), (3643, 5896)]