20621840

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13567}}^1$

素因数の和:13599

約数の個数: 40

約数和(自身を含む): 50472960

約数和(自身を除く): 29851120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13567, 27134, 54268, 67835, 108536, 135670, 217072, 257773, 271340, 515546, 542680, 1031092, 1085360, 1288865, 2062184, 2577730, 4124368, 5155460, 10310920, 20621840]

約数ペア:

[(1, 20621840), (2, 10310920), (4, 5155460), (5, 4124368), (8, 2577730), (10, 2062184), (16, 1288865), (19, 1085360), (20, 1031092), (38, 542680), (40, 515546), (76, 271340), (80, 257773), (95, 217072), (152, 135670), (190, 108536), (304, 67835), (380, 54268), (760, 27134), (1520, 13567)]