21171782008

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{5231}}^1\times {\mathrm{38917}}^1$

素因数の和:44167

約数の個数: 32

約数和(自身を含む): 42759984960

約数和(自身を除く): 21588202952

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 5231, 10462, 20924, 38917, 41848, 68003, 77834, 136006, 155668, 272012, 311336, 505921, 544024, 1011842, 2023684, 4047368, 203574827, 407149654, 814299308, 1628598616, 2646472751, 5292945502, 10585891004, 21171782008]

約数ペア:

[(1, 21171782008), (2, 10585891004), (4, 5292945502), (8, 2646472751), (13, 1628598616), (26, 814299308), (52, 407149654), (104, 203574827), (5231, 4047368), (10462, 2023684), (20924, 1011842), (38917, 544024), (41848, 505921), (68003, 311336), (77834, 272012), (136006, 155668)]