21023704

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6521}}^1$

素因数の和:6571

約数の個数: 32

約数和(自身を含む): 43827840

約数和(自身を除く): 22804136

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 248, 403, 806, 1612, 3224, 6521, 13042, 26084, 52168, 84773, 169546, 202151, 339092, 404302, 678184, 808604, 1617208, 2627963, 5255926, 10511852, 21023704]

約数ペア:

[(1, 21023704), (2, 10511852), (4, 5255926), (8, 2627963), (13, 1617208), (26, 808604), (31, 678184), (52, 404302), (62, 339092), (104, 202151), (124, 169546), (248, 84773), (403, 52168), (806, 26084), (1612, 13042), (3224, 6521)]