40870580

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{22961}}^1$

素因数の和:23059

約数の個数: 24

約数和(自身を含む): 86796360

約数和(自身を除く): 45925780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 22961, 45922, 91844, 114805, 229610, 459220, 2043529, 4087058, 8174116, 10217645, 20435290, 40870580]

約数ペア:

[(1, 40870580), (2, 20435290), (4, 10217645), (5, 8174116), (10, 4087058), (20, 2043529), (89, 459220), (178, 229610), (356, 114805), (445, 91844), (890, 45922), (1780, 22961)]