20177471840

素因数分解:

$2^5\times 5^1\times {\mathrm{701}}^1\times {\mathrm{179899}}^1$

素因数の和:180615

約数の個数: 48

約数和(自身を含む): 47737544400

約数和(自身を除く): 27560072560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 701, 1402, 2804, 3505, 5608, 7010, 11216, 14020, 22432, 28040, 56080, 112160, 179899, 359798, 719596, 899495, 1439192, 1798990, 2878384, 3597980, 5756768, 7195960, 14391920, 28783840, 126109199, 252218398, 504436796, 630545995, 1008873592, 1261091990, 2017747184, 2522183980, 4035494368, 5044367960, 10088735920, 20177471840]

約数ペア:

[(1, 20177471840), (2, 10088735920), (4, 5044367960), (5, 4035494368), (8, 2522183980), (10, 2017747184), (16, 1261091990), (20, 1008873592), (32, 630545995), (40, 504436796), (80, 252218398), (160, 126109199), (701, 28783840), (1402, 14391920), (2804, 7195960), (3505, 5756768), (5608, 3597980), (7010, 2878384), (11216, 1798990), (14020, 1439192), (22432, 899495), (28040, 719596), (56080, 359798), (112160, 179899)]