81315980

素因数分解:

$2^2\times 5^1\times {\mathrm{347}}^1\times {\mathrm{11717}}^1$

素因数の和:12073

約数の個数: 24

約数和(自身を含む): 171270288

約数和(自身を除く): 89954308

約数列:

[1, 2, 4, 5, 10, 20, 347, 694, 1388, 1735, 3470, 6940, 11717, 23434, 46868, 58585, 117170, 234340, 4065799, 8131598, 16263196, 20328995, 40657990, 81315980]

約数ペア:

[(1, 81315980), (2, 40657990), (4, 20328995), (5, 16263196), (10, 8131598), (20, 4065799), (347, 234340), (694, 117170), (1388, 58585), (1735, 46868), (3470, 23434), (6940, 11717)]