21940360

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{42193}}^1$

素因数の和:42217

約数の個数: 32

約数和(自身を含む): 53164440

約数和(自身を除く): 31224080

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 42193, 84386, 168772, 210965, 337544, 421930, 548509, 843860, 1097018, 1687720, 2194036, 2742545, 4388072, 5485090, 10970180, 21940360]

約数ペア:

[(1, 21940360), (2, 10970180), (4, 5485090), (5, 4388072), (8, 2742545), (10, 2194036), (13, 1687720), (20, 1097018), (26, 843860), (40, 548509), (52, 421930), (65, 337544), (104, 210965), (130, 168772), (260, 84386), (520, 42193)]