128125220

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1\times {\mathrm{691}}^1$

素因数の和:900

約数の個数: 48

約数和(自身を含む): 275294208

約数和(自身を除く): 147168988

約数列:

[1, 2, 4, 5, 10, 20, 73, 127, 146, 254, 292, 365, 508, 635, 691, 730, 1270, 1382, 1460, 2540, 2764, 3455, 6910, 9271, 13820, 18542, 37084, 46355, 50443, 87757, 92710, 100886, 175514, 185420, 201772, 252215, 351028, 438785, 504430, 877570, 1008860, 1755140, 6406261, 12812522, 25625044, 32031305, 64062610, 128125220]

約数ペア:

[(1, 128125220), (2, 64062610), (4, 32031305), (5, 25625044), (10, 12812522), (20, 6406261), (73, 1755140), (127, 1008860), (146, 877570), (254, 504430), (292, 438785), (365, 351028), (508, 252215), (635, 201772), (691, 185420), (730, 175514), (1270, 100886), (1382, 92710), (1460, 87757), (2540, 50443), (2764, 46355), (3455, 37084), (6910, 18542), (9271, 13820)]