21358504

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1213}}^1$

素因数の和:1321

約数の個数: 32

約数和(自身を含む): 41955840

約数和(自身を除く): 20597336

約数列:

[1, 2, 4, 8, 31, 62, 71, 124, 142, 248, 284, 568, 1213, 2201, 2426, 4402, 4852, 8804, 9704, 17608, 37603, 75206, 86123, 150412, 172246, 300824, 344492, 688984, 2669813, 5339626, 10679252, 21358504]

約数ペア:

[(1, 21358504), (2, 10679252), (4, 5339626), (8, 2669813), (31, 688984), (62, 344492), (71, 300824), (124, 172246), (142, 150412), (248, 86123), (284, 75206), (568, 37603), (1213, 17608), (2201, 9704), (2426, 8804), (4402, 4852)]