21709528

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{1033}}^1$

素因数の和:1147

約数の個数: 32

約数和(自身を含む): 42435360

約数和(自身を除く): 20725832

約数列:

[1, 2, 4, 8, 37, 71, 74, 142, 148, 284, 296, 568, 1033, 2066, 2627, 4132, 5254, 8264, 10508, 21016, 38221, 73343, 76442, 146686, 152884, 293372, 305768, 586744, 2713691, 5427382, 10854764, 21709528]

約数ペア:

[(1, 21709528), (2, 10854764), (4, 5427382), (8, 2713691), (37, 586744), (71, 305768), (74, 293372), (142, 152884), (148, 146686), (284, 76442), (296, 73343), (568, 38221), (1033, 21016), (2066, 10508), (2627, 8264), (4132, 5254)]