81203840

素因数分解:

$2^7\times 5^1\times {\mathrm{181}}^1\times {\mathrm{701}}^1$

素因数の和:901

約数の個数: 64

約数和(自身を含む): 195478920

約数和(自身を除く): 114275080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 181, 320, 362, 640, 701, 724, 905, 1402, 1448, 1810, 2804, 2896, 3505, 3620, 5608, 5792, 7010, 7240, 11216, 11584, 14020, 14480, 22432, 23168, 28040, 28960, 44864, 56080, 57920, 89728, 112160, 115840, 126881, 224320, 253762, 448640, 507524, 634405, 1015048, 1268810, 2030096, 2537620, 4060192, 5075240, 8120384, 10150480, 16240768, 20300960, 40601920, 81203840]

約数ペア:

[(1, 81203840), (2, 40601920), (4, 20300960), (5, 16240768), (8, 10150480), (10, 8120384), (16, 5075240), (20, 4060192), (32, 2537620), (40, 2030096), (64, 1268810), (80, 1015048), (128, 634405), (160, 507524), (181, 448640), (320, 253762), (362, 224320), (640, 126881), (701, 115840), (724, 112160), (905, 89728), (1402, 57920), (1448, 56080), (1810, 44864), (2804, 28960), (2896, 28040), (3505, 23168), (3620, 22432), (5608, 14480), (5792, 14020), (7010, 11584), (7240, 11216)]