20521130

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4129}}^1$

素因数の和:4214

約数の個数: 32

約数和(自身を含む): 42819840

約数和(自身を除く): 22298710

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 71, 142, 355, 497, 710, 994, 2485, 4129, 4970, 8258, 20645, 28903, 41290, 57806, 144515, 289030, 293159, 586318, 1465795, 2052113, 2931590, 4104226, 10260565, 20521130]

約数ペア:

[(1, 20521130), (2, 10260565), (5, 4104226), (7, 2931590), (10, 2052113), (14, 1465795), (35, 586318), (70, 293159), (71, 289030), (142, 144515), (355, 57806), (497, 41290), (710, 28903), (994, 20645), (2485, 8258), (4129, 4970)]